Hey OC! Many productive people have made some really great spreadsheets/guides for players to progress and start BFA. I decided to compile the most well worked (public) guides I could find and shamelessly post them here. Some might have been posted on the forums before. I'll try update the post whenever something new is posted before release. All credits goes to the people who's dedicated hours upon hours on creating these guides.
REALM FORUMS Defias Brotherhood / Ravenholdt et al. Shattered Halls / Sunstrider et al. Twilight's Hammer / Agamaggan et al. Aerie Peak / Bronzebeard Aggra / Grim Batol Aggramar / Hellscream Al'Akir / Skullcrusher / Xavius Alonsus / Anachronos / Kul Tiras Arathor / Hellfire Argent Dawn Aszune / Shadowsong Auchindoun / Dunemaul / Jaedenar Azjol-Nerub / Quel'Thalas Azuremyst / Stormrage Blade's Edge / Eonar / Vek'nilash Bladefist / Frostwhisper / Zenedar Bloodfeather / Burning Steppes / Executus / Kor’gall / Shattered Hand Bloodhoof / Khadgar Bronze Dragonflight / Nordrassil Burning Blade / Drak’thul Burning Legion Chamber of Aspects Darkmoon Faire / Earthen Ring Darksorrow / Genjuros / Neptulon Darkspear / Saurfang / Terokkar Doomhammer / Turalyon Draenor Dragonblight / Ghostlands Dragonmaw / Haomarush / Spinebreaker / Stormreaver / Vashj Emerald Dream / Terenas Frostmane Kazzak Kilrogg / Nagrand / Runetotem Lightbringer / Mazrigos Magtheridon Moonglade / Steamwheedle Cartel / The Sha'tar Outland Ragnaros Ravencrest Silvermoon Stormscale Sylvanas Tarren Mill / Dentarg The Maelstrom / Deathwing / Karazhan / Lightning's Blade Thunderhorn / Wildhammer Twisting Nether

I think what you're actually talking about when you say "niche" is the barrier to entry for new players. It sounds like you're worried that new players can pick up crafting professions and compete easier than before. Again, I'd say that the alpha build info in the OP looks pretty much the same as the current expansion. The true barrier to entry isn't the ability to level the profession quickly, it's actually recipe ranks. Some really good examples of this in the current expansion are rank 3 bracers, rank 3 flasks, and rank 3 felwort. It takes a certain level of investment to get those ranks, and the goblin activities related to those crafts simply aren't profitable/competitive without rank 3.
"A lot of the challenges are less about gear level and more about doing the mechanics correctly," he said. "Having two or three percent more health or more throughput isn’t going to help you if you’re missing interrupts. Putting the time in to just practice the challenge you’re trying to overcome is probably the best use of your time once you’re at a reasonable outdoor-Argus level of gear."
Again, these are >JUST EXAMPLES< but really the main idea is stop trying to make gold on something everyone else does... There are a million ways to make gold on this game. This idea of sharing a farming spot or telling people to farm a specific thing is pointless. If everybody follows the herbalism guide and gathers Winter's Kiss, what happens to the price of the herb? It plummets. If everybody farms something because it's worth 300k, it loses its value cause the demand won't match the offer most of the time. If everybody crafts the same item, you'll end up going into an undercutting war and waste time you could spend getting some good money on unexploited markets.
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Hey OC! Many productive people have made some really great spreadsheets/guides for players to progress and start BFA. I decided to compile the most well worked (public) guides I could find and shamelessly post them here. Some might have been posted on the forums before. I'll try update the post whenever something new is posted before release. All credits goes to the people who's dedicated hours upon hours on creating these guides.

Sorry about the salt but jeez, stop listening to guides. Just check your AH, see what old mats are low in offer, and go get em. >FOR EXAMPLE<, ghost iron ore is a gold mine right now, cause nobody can sustain the demand, and prices are way up. Plus side being, old farms are optimized like hell. You can fly in the old world, mobs won't bother you, no one is there to take your nodes, and there are plenty of items to make the most out of it. Which means it's way easier and requires less effort than farming in BfA.
"Essentially the Scrap-o-Matic 1000 works like the Obliterum Forge in Legion however one major difference from Legion is that you can use it to break down any gear obtained that is from the Battle for Azeroth expansion, including dungeon/raid drops, quest rewards, world drops and crafted gear. Apart from a chance at getting Expulsom you will also get ore, gems, leather, occasional enchanting mats (from scrapping cloth gear) and other crafting mats. The best way to obtain Expulsom seems to be from breaking down rare/epic gear you obtain from dungeons and raids, killing rare elites and doing world quests, it also drops rarely from BFA uncommon quality items."
"Essentially the Scrap-o-Matic 1000 works like the Obliterum Forge in Legion however one major difference from Legion is that you can use it to break down any gear obtained that is from the Battle for Azeroth expansion, including dungeon/raid drops, quest rewards, world drops and crafted gear. Apart from a chance at getting Expulsom you will also get ore, gems, leather, occasional enchanting mats (from scrapping cloth gear) and other crafting mats. The best way to obtain Expulsom seems to be from breaking down rare/epic gear you obtain from dungeons and raids, killing rare elites and doing world quests, it also drops rarely from BFA uncommon quality items."
World of Warcraft: Battle for Azeroth is the seventh expansion pack for the massively multiplayer online role-playing game (MMORPG) World of Warcraft, following Legion. It was announced at BlizzCon on November 3, 2017. In contrast to previous expansions, which went live at midnight in each time zone, Battle for Azeroth had a simultaneous release for all regions, corresponding to midnight Central European Summer Time on August 14, 2018.[1][2][3]
Why are you saying this would cut your margins down? If anything, it would increase your margins because all those scrapper mats are gonna be sold on the AH driving down the price, so each item is less expensive for you to craft, so your margins get bigger if keeping the same sale price. So long term this would probably drive down your sale price just due to supply and demand, so you would have to sell more to keep the same income, however that’s unrelated to your margins.
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-Gameplay- Gameplay has largely been stripped down to be a shell of its former self. This trimming has been going on for several expansions, but now it's even worse. Classes only have so many buttons which has resulted in very little skill involved in PvE (even PvP is a faceroll for most melee, lacking any sort of depth and decision-making as it's pretty clear what buttons to press in any given situation) and it's become more of a gear check. This expansion gave zero new abilities to classes, only took them away.
The older brother of this potion originally came about in Cataclysm as the Potion of Treasure Finding, and is actually one of the best ways to make money. Since most Pandaria mats are constantly farmed, they usually sell for less than the Cataclysm mats. This makes using this form of the potion more effective for making gold. Not to mention that creatures die faster to level 90s since they were made for the previous expansion, making farming the treasure chests that drop rather easy.
L La Croisade écarlate Alliance La Croisade écarlate Horde Laughing Skull Alliance Laughing Skull Horde Les Clairvoyants Alliance Les Clairvoyants Horde Les Sentinelles Alliance Les Sentinelles Horde Lightbringer Alliance Lightbringer Horde Lightning's Blade Alliance Lightning's Blade Horde Lordaeron Alliance Lordaeron Horde Los Errantes Alliance Los Errantes Horde Lothar Alliance Lothar Horde
C C'Thun Alliance C'Thun Horde Chamber of Aspects Alliance Chamber of Aspects Horde Chants éternels Alliance Chants éternels Horde Cho'gall Alliance Cho'gall Horde Chromaggus Alliance Chromaggus Horde Colinas Pardas Alliance Colinas Pardas Horde Confrérie du Thorium Alliance Confrérie du Thorium Horde Conseil des Ombres Alliance Conseil des Ombres Horde Crushridge Alliance Crushridge Horde Culte de la Rive noire Alliance Culte de la Rive noire Horde
This top-end difficulty was missing entirely from Legion’s first raid, Emerald Nightmare, which was cleared by top guilds in around 11 hours. Meanwhile the first guild to clear Uldir’s hardest difficulty, Mythic, spent somewhere around 70 hours attempting to kill the raid’s eight bosses. Even after all that time, the guild, Method, still had members say they loved the raid, and that it was one of their favorite in recent memory.
Meanwhile, Tyrande Whisperwind and Malfurion Stormrage grow impatient regarding liberating Darkshore from the Horde's control, ultimately choosing to begin the offensive on their own, against Anduin's advice. In order to maximize their chances, Tyrande undergoes a ritual to turn herself into the Night Warrior, the avatar of Elune's most wrathful and warlike aspects. To counter this, Sylvanas orders several Night Elven heroes who fell in the Burning of Teldrassil to be raised as Dark Rangers to bolster her forces.

It’s a good thing that the previous expansion, Legion, was the best in the game’s history because Battle for Azeroth is coasting on its success. The major class redesigns that happened then remain in effect (though some are a little worse, and some a little better), and the combination of World Quests and Mythic+ dungeons means there’s always something to do, no matter your skill level or how long you can play.
The Heart of Azeroth is an artifact given to the player character from the world soul via Magni Bronzebeard. It is a necklace that can use the power of Azerite, the lifeblood of the embryonic titan Azeroth (See Plot, below). Azerite is similar in function to Legion's artifact power, in that it is gathered normally from playing the game and is used to upgrade an artifact; likewise, the Heart is similar in function to Legion's artifact weapons by having the capacity to be constantly upgraded. Unlike artifact weapons, however, the Heart is shared with all of the player's specializations and can empower all eligible pieces worn simultaneously.
The Escalation patch has introduced several new scenarios with respective heroic modes that provide shiny new loot. It is still too early to predict which of these will demand the highest prices at the auction house or AH, since it can take weeks for players to work through the content and determine the value of the new drops compared to the existing items. Many expect the rarest and most prized drops to start commanding handsome prices starting June, so just keep your eyes peeled for popular WTB requests in general chat and high-selling items at the AH.
I'm pretty excited about where the various gathering professions could go this expansion. Crafting expansions actually have good stuff to craft to prepare for the upcoming raid so gathering items will be needed. On top of that nodes are giving out less so more effort equals higher prices. Now where this goes past launch I'm not sure but stuff like Mining and Herbalism should be solid at the beginning.
With G'huun's threat eliminated, the Horde and Alliance return their focus to the war. While the Horde procures the Scepter of the Tides, a legendary artifact capable of controlling the seas, the Alliance dismantles a potential alliance between Sylvanas and the vampiric San'lyan Elves. The Alliance begins to gear up for a preemptive strike against Zandalar, with the goal of crippling the Golden Fleet before it can be used against the Alliance and driving a wedge between the Zandalari and the Horde.
In Battle for Azeroth, the fall of the Burning Legion has set off a series of disastrous incidents that reignites the furious rivalry between the noble Alliance and the mighty Horde. As a new age of warfare begins, Azeroth’s heroes must set out on a harrowing journey in search of new allies, race to claim the world’s mightiest resources to turn the tides of war, and fight on several fronts to determine which side will lead Azeroth into its uncertain future. 
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