I have NCAA 10 for the PS2. I haven't played it for a while, but I remember it was fun. I just find it funny how the PS2 games are much funner than the PS3 games. Plus, the PS2 games seems complete out of the box.
If you could somehow mix some of the features from the PS2 games (homefield advantage, FCS teams, etc.) with some features of the PS3 (graphics, teambuilder, etc.), that would be a game I'd buy on day one.