Not sure on the practice stuff having never played college ball myself, but I guess more practice is good.
The shot clock change is interesting. I've never been a huge fan of lowering it, especially not down to 24 like some fans say, since I don't think it would necessarily improve the game. Would take out a lot of the different offensive sets you get to see in college that aren't in the pro game, could simply result in more garbage shots at the end of the clock, etc. 30 seems like a pretty good compromise, though. Should be fine as long as they don't go down to 24.
This won't happen since I don't see too many people complaining about it, but I think they could do with some changes to timeouts. I mean maybe I'm crazy, but it seems like the college game has like 60 timeouts every goddamn game. Between the timeouts for each team, the media timeouts, and college refs being pretty slow with any sort of replay review the games lose any semblance of flow sometimes.
I assume they'll never touch the media timeouts for business reasons, so maybe take one or two away from the teams. There's no reason play needs to be stopped as much as it is these days.
