Professions are tuned the same as in vanilla.
>For fun
Crafting gear (so tailoring for you) because crafting your own gear feels very nice, you even get some exclusive items like pic rel
>For money and exploration
Herbalism + Alchemy, you can sell both the herbs and the potions, and use them yourself.
>For PvP
Engineering, the only profession that provides a benefit you can't really buy with money.