1st thing: the timed dq really favours quick and lousy jumps over precise cbs.
2nd thing: could you make a mod which consist of a huge circular dojo (like this one) where the players starts on opposite sides and have the majority of it covered in a frictionless mat (circular), a few flying boxes (non frictionless, many of these, and needing to use them to climb would be awesome) and one flying ball (close to the middle) which is insta win? This would promote precise cvs yet have players need to not only do their own race to win but also take care of the opponent.