The magic bullet is called health. You can't lose that many linebackers and not have it hurt the special teams.
and I think rebuild is a strong word to use when talking about the d-line. They'll return two players who have started and played a lot.
And what's wth the "we should bring back...?" You know something I don't?
Ummm, aside from the rumors about suspensions, you have issues of health, academics, etc that could come up before the start of next season. Could you have predicted that by the time bowl season came around, two of our running backs would have missed the whole season and transferred, and that our other starter would be suspended, and that we'd be starting a freshman who was injured preseason?
I also haven't taken into account any juniors that decide to leave the team, such as Sash, McNutt, etc.