I have tried almost all on my server and i conclude that herbalism and starlight grinding even on 62g each is still superior to everything , the other interesting choice is blacksmithing , hoofplates and stirrups sell well but it takes alot of time to sell them. What i have tried:
Alchemy - Its better to sell raw mats unless you got a rank 3 on something but even then its debatable
Jewelcrafting - same as alchemy
Tailoring - totally outdated and worthless - i guess its best value are still hexweave bags?
Enchanting - same as other craft proffs , no real profit from converting
Blacksmithing - hoofplates and stirrups are good and potentially can offer a lot of profit - solid profession
Inscription - i havent try that
Leatherworking - i havent try that too
Engineering - i havent try that and i wonder if its profitable to craft and sell sky golems
As for gathering profs , herbalism beats mining easily , skinning has potential but its not for everyone.
Does anyone know any site who focus on how to make gold with professions? im very interested to see other opinions on the topic.