I think the game is pretty much a re-hash of last year. I enjoy playing it, but it seems like I've been playing the same game for years now.
The lighting and stadium models are very nice this year. Player models are pretty much untouched from last year.
Home field advantage and the match up stick are cool, but they don't really lend anything to the game.
My biggest complaint is the slow down. An XBOX game should not have slowdown issues. Running up the gut or actually, running in general, tends to get choppy and the framerate starts taking a hit. Turning off Home Field Adv. helps, but I like having that on. Taking off the stadium shake helps, but that is fun. Turning down the announcers helps the slow down a bit, but there again, that is one of the reasons I love NCAA.
So, at the end of the day, I see a good college football game that needs some work. It's basically last year's game with new rosters and a bunch of fancy stuff added that slows down the action. Seriously, there shouldn't be any framerate issues or slowdown on an XBOX game when you have it running on the PS2 and GC as well. The game feels rushed.
I'm ready for ESPN NFL 2K5 tomorrow. All the movies I've seen of actual gameplay are great. I haven't noticed any slowdown and the brand marketing of ESPN looks incredible. Can't wait.