It's fine, explain where you are physically tampering with the games mechanics to give you a substantial advantage or immunity against your opponents if you are using a controller with exclusively hardware upgrades. Most of it isn't even game related. Grips, remolded shape, custom design, none of these have to do with gameplay performance. The paddles aren't macros for mods, they're just button that are already on the controller moved to a secondary location. The trigger stops are controversial, but they have no way of making you react faster than others, you still pull the trigger as far as you need to fire.