I would like bizarrer racing courses that really off-set the awsomeness of this
The three options of Easy, Normal, and Hard
A multi-player way that could easy some hardship would be some medium-sided screens that has the other players playing to that song and their scores on them
A neater way of organizing the songs, and some-of a syncing level bar or something like that really gives the racing courses the time to build upon everything to the songs and not like the usually courses with the curves, and up and down motions
Like a major twist that require good timing due to the twisting around, a drop style fall where you going down but the race tracks are only visible to the sides, but not the insides
That you have to go down like a waterfall that has the blocks and the traps and so you have to get them like a falling side-shooter game except you see the visible race track, so you're only seeing the changing colors that you have to go down and you get to see the ship gravity to remove the impact once your on the leveled tracks