I was thinking about this a few nights ago, and i think i have an idea on how to get corks to look better, but it requires some tiny changes with the game.
Look at when you're doing back/frontflips with spins. the little dude is doing the flip in his spin, not the spin in the flip. Its hard to explain, but try doing a 90 degree spin and then do a backflip. He does the backflip to the side, and not straight back uphill. If QuazBotch (sp?) makes the front/backflips go straight uphill or downhill, corks would look a lot better. And we still have the lincolns do do rodeos, misties, flats etc.
I think it would work, but as i said earlier, it requires a little change in the script. I'm not familiar with how hard that would be, but i think it could be done.