Every expansion has something it doesn't do well. In trying to decide whether or not to get back to WoW, I want to know what problems I'll be facing in this expansion. I really wish I'd waited to ask that question before sinking three weeks into WoD when that came out. So, what are the things that Legion doesn't do so well and which might become the thing that people complain about once the new expansion smell wears off? Nothing is flawless, and I'd like to know what this expansion isn't great at.