Currently Online 
Button layout customisation. Most games are perfectly designed and their button layout is perfect (most are basically standardised nowadays) but some are either really fiddly or unintuitive. Allowing you to change buttons is a great step and it annoys me if it's not there, even if I don't need it.
Best example I can use is probably Overwatch and Doomfist and Moira. Moira has her orbs ability, you press a button then chose heal on left hand, attack orb on right but for some reason, when you did on console version of the game, the heal in the left hand was thrown by the right trigger. and vice versa. Very confusing. I easily just changed it.
Doomfist was the same where his shotgun on his left hand was fired by pressing the right normal shoot button and his fisting on his right hand was his back left bumber ability. This didn't make sense to my brain but I was easily able to change it.
Hmm, pie.
