Hey guys, small suggestion.

This is just because I am used to this from other programs.

You have Shift+Alt+Space giving canvas rotation in steps, which is a little awkward for the fingers.
You have Shift+MMB for canvas rotation which is nice.

Why not Shift+Alt+MMB for stepped canvas rotation?

You know you can change this yourself in settings->configure Krita->canvas input settings, right? We have smooth rotation on the simple combination by default because that is what people generally prefer.

(And you can use 4 and 6 for stepped rotation as well )