1) Of all things, you shouldn't be getting distracted by that. 2) There are third party programs you can use to get a similar result. 3) I doubt osu! will ever have more than a single window.
Key overlay, k1k2m1m2? Or is it something else? I never get distracted by it, cant see how people do get distracted by it Also, why do you even want to see it Most streamers play with PC/face/Keyboard+Tablet/mouse (3 screen)