Maybe A to jump, B to attack, also, halfway through writing this, i realised there is a input lag on the enter button sometimes, can you maybe patch that for a future update?
I think adding more control customization options would be a good idea in general. I'm working on the next update already and that's not really within scope of the next deadline I set for myself, but I will for sure look into it. As for the input lag, that is very strange and I have not experienced it myself, but you're saying it's with the enter key on the keyboard, so it can't really be a controller issue... I can look into it, but I doubt I can find or fix it. Are you maybe confusing input lag with input buffering? (When pressing buttons quickly after another, you can press attack during the previous animation so you don't have to time every attack frame perfectly in a combo. This system might cause some problems...)