Texas just needs the right coaching, which they will stumble across at some point. USC is more iffy, they may have a good coach, or not. I agree Nebraska is probably seeing a limit of about ten wins prebowl now in a very good year. Ohio State will remain hyperconsistent.
Alabama post-Saban will be interesting. UGA could creep into the discussion with another couple NCs and consistent playoff appearances. That could take a decade. Or they could Clemson (who will be interesting to watch this year). Michigan at least won the B1G and made the playoff, which sort of picks them up now of course.
OU is hanging tough, as is ND so far. ND has a rep of course they need to shake somehow.