The track bike is extremely limited in the number of tricks one can do. If people keep want to keep doing trick riding on their track bikes, the bike is going to have to evolve to a point where it's essentially no longer a track bike at all.

But I suspect the trend will die before that happens. I feel what you're witnessing is the rollerblading of the aughts.

Prove me wrong, and show me some cool **** you can do on a track bike that you'd never pull off on a BMX. I'm not talking about backwards circles or leg-over-bar skids, but something big and ballsy.