Yeah, voting (for maps at least) is on the todo list. Well, there's the oldstyle voting that's still on there but for some reason resulted in server instability. I have a new method which I've discussed before which will basically increase a maps position in the rotation when it is voted for. Also it would be nice to have voting for different game modes.
I'm a bit wary on voting for player kicks because it might be abused. I can still put it in, though.