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.
Making gold = work, people just want to be lazy and cash in but today a lot of people use TSM, have access to this reddit, youtube guides, etc. More and more people play wow to make gold so ofc the AH work gets harder, you just need to find your niche, i'm making gold with Tailoring from MoP and Cata for transmogs, not a lot of work to farm maths and i sell each piece around 10k, 7 pieces per week and i'm fine for a month.
The illusions, meh. Last time I checked both TSM and the LGM spreadsheet both showed only a couple hundred gold return/unit, if they showed a profit at all (most didn't). They're slow movers as it stands, and there is already substantial competition over that market on my server anyway. So it's not worth the trouble of babysitting/cancelling/relisting for such a nominal return.
When you launch the game you can choose from two opposite factions (Alliance and Horde), 7 different races for each factions and 6 different classes with very wide mixture of the character's appearance. World of Warcraft play involves the completion of quests while traveling through the story line, gaining experience from the quests to level up the characters and picking up the useful loot to trade with other players. Once a player feel strong enough, or simply just wishes to find some better items, players can visit dungeons where a group can fight together to get better loot from stronger monsters. Near end-game the biggest dungeons require a raid with up to forty players to face and accomplish the hardest challenges for the most valuable items. Another big part of the game is the Player vs Player (PvP) fights where gamers can play againts each other in 2vs2, 3vs3 arenas or battlegrounds for PvP rewards.
Hazzikostas posted the changes in a new blog post on the official WoW forums. Season 2 will go live on January 22 with new Warfronts, Mythic + PvP, World Content, a new Titanforging cap and much more. We’ve included his post down below and have also included a follow up post about rewarding loot for Emissaries and Assault quests based on loot specialization.
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.