With XBox 360 controllers it should already work as you described... What controller are you using? An option to rebind controls is pretty high on our roadmap, no promises when, but it will be one of the first features to be added.
Yeah, a number of people told us they don't like the slow-mo powerup. We were thinking about a slow down trap, which affects the bunny who picks it up, but you can kick it like the ball and sic it onto the opponent.
