As slime said: Herbs. I want to add 1 species: ore. Let's talk about herbs, alchemy and inscriptions. The former has always been the mainstream business element, while the latter is the rising star today. Herbs are the king of raw materials for WOW. The use of ore will also be improved in WLK, not to mention jewelry processing, and the slots of new equipment are empty; There will be more people practicing forging, and maybe everyone will wish they had more grooves on their bodies. Finally, talk about queer project. I think this is the main export specialty of ore! Imagine after WLK: How many people will ride Harley-Davidson motorcycles in Stormwind and Ogmali! ! Do you understand ~ ~
Also remember: some people will choose DK. Most players will not leave their business skills blank. Think about what business skills the old players who play the new number will choose.
If I choose, mining, engineering, FM and alchemy are all very cost-effective.
There are many investment targets, and profiteers must find good targets. WLK's first bucket of gold is probably on the top one. Of course, the money for professional training ... I ignore it.