Whenever story mode comes into production, I think a good detail that could spice things up is to remove Ouch regeneration during missions. It would add some challenge and incentive to avoid beefing it other than just losing points. Of course, this would also need the little 'hop off board midair and keep points' thing to be addressed as well. But I think this mechanic could make missions a lot more interesting by making bigger combos carry a lot more risk and wipeouts have some consequences. This might also be neat for any free skate missions that might be added as well.