I used to; I don’t really have any solid advice though - I just had to try mapping it out, if a button didn’t work right, change the mapping until I got that one right, repeat for all of them until it was the way I wanted it.

Never got one, but I’ve got an 8bitdo M30 that has them, I love it.

It’s all about the controller man, back in the day having the 6 button genesis controller was like it’s own cheat code.