Since I've been absent from WoW for quite a few months now, I haven't been following notes, on the development of professions in WoD.
That is why i want to ask which professions you think, at least from the notes available so far, looks to be gold mines, (apart from gathering) e.g. Inscription and Alchemy in MoP.
Atm it's difficult to say. Professions intermix like never before (e.g. to make an +int pot you need herbs + fish, to make a tanking potion you need herbs + ore) and garrisons will also have a strong influence.
My best bet (some stuff are still not even fully implemented in beta) is to play it on the safe side: consumables + bags. Time will tell if any other market develops strong potential.