Controls screen is kind of ready. I might throw in nickname selection there. Also, since those are some pretty complex settings that might actually become irrelevant (if you remove a controller, for example), these are not saved anywhere – you have to set up the controls each time you play. I don't think that's much of an issue, though.
And this is the one that took the most of my life:
I'm pretty happy with the result – maybe the initial settings can be awful on most devices, you're left with so many preferences that you can get it right yourself. (Eventually.)