Option of 10-second runoff on penalties in the last minute of each half; more liberal intentional grounding rule; taunting could nullify a TD:

http://rivals.yahoo.com/ncaa/football/news?slug=ap-ncaa-r...

I like the last one.  Too many guys start showboating before they actually score.  Up to now, it only cost their team 15 on the PAT or the kickoff -- not such a big deal if you're just concerned about getting six for yourself.  But if it takes away the TD, they might think twice...or even once.

I wish the NCAA would lighten up a little on end zone celebrations, though.  Last year, a team got 15 because the mascot hugged a player who just scored.  C'mon.