As someone who use to main melee jobs and plays on controller, and who doesn't savage / ultimate raid, I don't think positionals add much to gameplay. I flick the control stick left or right once every few button presses. There's not much skill in that. The skill comes from memorizing a fight and knowing when the boss is going to turn or jump away or any of that type of stuff. Which you would still need to do even without positionals. I will say that until they remove positionals I wont personally even consider maining something other than Dancer. Unless they really mess up Dancer next expansion.