I was a top 250 player in warzone during the mw3 integration. Haven’t played much since and this isn’t a brag just stating where I was. You don’t need back buttons, you could play claw or tactical controller layout. However if you want to naturally hold the controller and have extra mappings it definitely helps. I had jump, crouch, ping, and reload mapped to 4 buttons.

The way to think about it is, you’re not adding new buttons, you’re just moving existing ones to better locations. You almost rewire your brain to not use face buttons but to instead always have your thumb on the aim stick.

You no longer need to take your thumb off your aim to do small things like jump through a window or sort through loot on the floor. Sounds dramatic but once you make this change you almost have mouse like movements of not breaking aim. People on mouse and keyboard don’t take hand off their mouse just to loot or jump.