The AH is more than half my game currently. I buy using the mobile app while I'm at work and run TSM on a second account at home.
As far as actually playing the game is concerned, since 5.2 I've done a bit of Thunder Isle, a bit of Archaeology, some odd jobs around my farm, but I still feel a pretty powerful ennui about endgame. I think I need to raid again. I suddenly realised that there isn't anything compelling me to complete new solo content on my "main" toon Syrannia. I could be going in there with my warlock Coreus or another class which is more interesting to solo with than Arms warrior. Not that I dislike Arms specifically-- I just prefer ranged classes when not tanking.
I decided to start levelling my Death Knight, Geldt, from eighty-five to ninety, so I picked up Jewelcrafting on him to finally get those meta gem schematics which only drop from Pandaria mobs. I had to dump Mining to do it [Alchemy stays-- you can never have too many alchemists] so I levelled mining again on my Paladin, dropping Jewelcrafting to do so [again for him, Alchemy stays].
It's a bit of an odd thought, but what I always find disappointing about relearning professions is when you finally hit 600 skill and
no achievement pops up because you already got the "two maxed professions" one from before.
So my professions as they stand are:
Syrannia [90 warrior] -- Blacksmith, Goblin Engineer
Coreus [90 warlock] -- Enchanter, Tailor
Tashraal [90 shaman] -- Scribe, Gnomish Engineer
Geldt [86+ death knight] -- Jewelcrafter, Transmute Alchemist
Ghamor [85 hunter] -- Leatherworker, Transmute Alchemist
Judicas [85 paladin] -- Smelter, Transmute Alchemist
Arldern [85 druid] -- Herbalist, Elixir Alchemist
I'm pretty happy with that. Herbalism is the weakest link, as only a gathering profession, but I have from time to time found the need to go out hunting for specific herbs that are not available on the AH, and farming herbs in druid flight form is still the best way.
The only profession I don't have effectively maxed out is Skinning, which is fine with me because it's by far the most useless profession. I think I've given Skinning to every new toon I've rolled in the past two years, but it's been that long since I actually levelled anything. I'm sure I'll get there with my Monk eventually.
So I guess this is the game for me these days. I spend more time organising my shit, "preparing" to play the game, than actually playing it. I spend hours tweaking my sell prices and buy alerts, I min-max my professions, and I love to buy levelling BoEs pre-emptively if I think there is any chance I'll find it useful. I've been buying a bunch of Mists BoEs for my L85 Hunter, for that point in the future when I finally get around to playing him again, realising the whole time that if anything it will actually make the game more boring to play due to overgearing.
But yeah, I reckon I'm set up pretty well now, for when I do end up playing the game.