My opinions

Sombra sym mei most infuriating to play against

Hanzo would be fine if his arrows didnt literally bend time and space

Mercy movement is way too good now making her very difficult to kill and anyone she pockets is also.

Widow is just annoying due to the fact she can win games simply by existing on the map due to her consistent 1 shot. She is easy to dive but it usually takes alot of resources to get to and focusing her can often give up vital space

He would need to install an external progamme like ds4windows(can depend on type of controller with some of these) that mimics keyboard inputs through controller inputs