Just a few things I think need changing. On the qualifier you get one attempt at doing each obstacle, on the red balls it took me around 7 tries to do the balls alone, I gave up when I found out I had to do the ring things in the same go. Also, lag reduction is a big idea, when I was playing my MC was all jittery, try adding a button you press before every course so you can turn it on to avoid lag or something. For me crash mountain seems to be gllitchy, I pressed the button and nothing happened though this could be because of the lag. And finally the wipeout zone needs work, its very easy, try making the launc pads (I'm assuming thats what the plusses are) at different levels or something.