There's something that's been bothering me for a while now, in both college and pro football:
Referees need to START BLOWING THE DAMN WHISTLES A LOT FASTER. The play is SUPPOSED to be OVER when a players forward progress is stopped.
Far too often, they let it go on and on... until 2,3 or more players are piled on, stripping away at the ball, and eventually falling on the player with the ball. In the NFL in particular, its turned into nothing but a game of pulling the ball out.
When they ain't moving forward, BLOW THE WHISTLE and stop the play. It'll help reduce injuries.
I think, maybe this a by-product of instant replay... refs tend to just "let the play go", and sort it out later. The game would be better if they'd end plays quicker.