Patience and extra gold are rather important for the mounts so it might not be best for you right now. As for the operation (Wrath and Pandaria mounts right now), you need a miner (ore is cheaper than bars), transmutation master alchemists (living steel and some time eternals for daily cooldown, titanium and riddle of steel), and potentially multiple engineers (for more Sky Golems, plus at least one gnomish and one goblin if you want to do both rockets). The best way to source Pandaria mats cheaply is to buy up Spirit of Harmony when it's cheap and check often for mats cheaper than the conversion rate (1 Spirit buys 20 ghost iron ore, 5 trillium ore, 20 Kyparite, and more). Same with Eternals (for crafting titansteel) have to regularly check and grab them up whenever they're cheap (frozen orbs can be exchanged for eternals in old Dalaran too so watch for some cheap orbs as well). I also sell Golden Lotus on the side since it goes for more than the Spirit cost. (Edit: Also should point out that at the end of the expansion everyone is bored with nothing better to do so the profits on the mounts have dipped to as low as 5k.)
What? I said I giggled because he both cautioned people away from saturated markets and then pointed them to saturated markets. It had nothing to do with the sell rate of Golems since whether or not they sell quickly wasn't an issue. I was calculating for monthly profit, based on OPs example. In the case of an item that each toon can only make one of in a given month it doesn't matter how fast they sell since whether it sells on day 1 or day 20 it doesn't change how many more you can make on that toon.
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The game is based on the Warcraft series of RTS games first released in the mid 1990s. WoW expanded on the early Warcraft single player franchise and is now a vibrant multiplayer world, where players may engage in roleplaying, PvE, PvP, dungeon instances, battlegrounds, arenas, and raids. There are lots of challenges in WOW, and WOW gold plays an important role to help players to succeed in these challenges. 

The Company protects the privacy and integrity of the data it collects by employing appropriate administrative protocols, technical safeguards, and physical security controls designed to limit access, detect and prevent the unauthorized access, improper disclosure, alteration, or destruction of the data under its control. The Company transmits the data used by its external service providers for the specific outsourced operations listed above across public and private networks via recognized encryption technologies, such as by using Secure Sockets layer (SSL) software, which encrypts the data you input.

-New dungeons- About 3/4 are fairly decent, not too long not too short, but none of them are compelling, none make me say to my friends and guildies, "Hey, let's do this instance, I love the theme and encounters." They're dull but tolerable. The other 1/4 of the dungeons just aren't fun and you will groan when you get a mythic Keystone for the Underrot, the snake temple, or Waycrest Manor. Waycrest Manor is actually one of the better dungeons, however, with the new Infested affix, Waycrest Manor suffers from many game-breaking bugs that end in the entire instance being pulled due to doors not properly working as intended.
Prepare the Horde for war by recruiting the ancient empire of Zandalar. In this troll-dominated territory, ancient evil waits to be unleashed on the world as you battle crazed blood-troll worshippers, gargantuan dinosaurs, and titan constructs. Discover Zuldazar, the oldest city in Azeroth; unveil the bleak swamps of Nazmir; and traverse the deadly deserts of Vol'dun.
Strictly speaking, reselling items is not making gold. At best, you are "making gold" for yourself. There has been huge deflation with BfA launch (check token value lol) and personally I really want to see how Blizzard "economy" team is going to react, because effects of deflation are ranging from bad to terrible. No idea what is this experiment about?
The hexweave bags are still a safe bet unless the new 32 crafting cost is like 10% of them. The one thing I'm more concerned about is the professions squish. This will make the old world items that we've been selling (TBC Dust still sells by 200 stacks easily) only required for Transmog and not leveling. This was a better option for a lot of professions (especially enchanting). Expecting their near-death with the next expansion. :( 

Professions are skills used to create and enhance items (gears). You will start with one skill once your character has learned a profession. When you use the profession, your skill will increase. A profession’s higher skill will allow you to create more powerful items. If you change a primary profession, you will lose any skill you have made with your original profession. So it is important to choose your primary professions wisely.
WowHead reported that the 8.1.5 patch in the Public Test Realm added "Stanley", a thin man with gray-white hair and sunglasses who greets people by shouting “Excelsior!” So far, he was only found in Stormwind, reflecting the colors and armor of the Alliance. But a little more in-depth understanding of this update also has two Stanley character models: one is a neutral colors without armor, and the other is wearing Horde gear.
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.
BfA Profession crafted items! A look at 10 (maybe a few more) of the coolest WoW items that you'll be able to craft with professions in Battle for Azeroth. These BfA Profession recipes are on the alpha so many things are still placeholder- take this as an early Battle for Azeroth profession preview, because things may still change before BfA leaves alpha and launches on live WoW servers.
That's where i'm at now. I got into it late. I had 40k to start. Sold fish up to about 100k total starting capital. Started making and selling decks when they were going for 80-200k on my server. Morons have repeatedly undercut decks by 30-60k at a time even after the market has been reset (not by me) multiple times. Now the decks are 25-80k... I did manage to make 3.5m gross in the last 2 weeks. Now the individual cards are selling for MUCH less than the decks so I may stop crafting myself and just start buying the individuals... idk where to go from there though. Do you think the decks will hold any value moving forward? I'm kind of hoping for something similar to obliterum in legion to increase the ilvl and keep them relevant.

by Rabbit. Okay, so I got tired of dying to random trash mobs and considered what I could do about it, and I thought "the first thing I need to know is when I get aggro", so I made a mod that tells me: BanzaiAlert It has options for sound, message, LowHealthFrame flashing, and comes prepacked with a female voice that says "Aggro" when that is the case (from Squishy).
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I think that's server dependant. I make a lot of Golems, but the price on my server is high enough that you could buy all the living steel and still make about 20K (almost 200kg on AH). Its just that you proc all the way up the chain. You proc 20% of your trillium, and then 20% of your living steel. SoH and Ghost Iron are such low effort farms, too. 20% of 180 Trillium Bars at 500g is 18k more profit, 20% of 150 Living Steel at 3500g is another 105kg. That's an extra 25k profit per Golem. If they stop selling stockpile them for the next expansion, they always boom with the price of herbs. And a consistent 20% proc rate is the opposite of RNG, its extra free stuff as a benefit to completing an extra quest (not to mention for new alchemists the investment of leveling Vanilla Alchemy). You're looking for some get rich quick scheme, where the real way to build wealth is patience and volume. No market is going to be viable because you want it to be. Only because you make it viable.