I mean - if you are comfortable playing with KB+M there is definitely no reason to use controller; I go back and forth on the PC depending on whether I want a surface on my lap (for KB+M) or not. My biggest gripe is that the UI layouts aren't separate: switching between the two requires rejiggering the abilities layout. Other than that, if all you have is the controller - this version is much improved over the first game (managing bags is about the greatest headache I ran into).