As much as I'd love updated rosters for NCAA, it's not a realistic goal. I looked at the detailed roster update for Madden this year, and tried to imagine EA doing that for 10,200 players. It's just not a realistic goal.
That said, I do wish they'd at least do an update when the season begins, not to edit player's ratings, but at least make it so the players are largely correct.
On a similar note, correctness should be a focus of sports-gaming for the future. Not rating-specific, but everything else. There was at least one high-profile quarterback in NCAA this year that had the wrong race in the game. And Corey Lynch was represented by a black man in EA's NFL Head Coach. I realize that Lynch wasn't a major name in the NFL Draft last year, but how many times did the replay of him blocking the kick against Michigan get shown? If EA's going to take the time to put real players into Head Coach, they should make sure they're at least physically correct.
I would love the updated rosters, but very unlikely. I think they do a little better on character movement. I would like to see some types of downloads of rosters. That would be kewl.