I believe at least half of the defense were underclassmen and aside from Bryce Perkins and the TE/WR Justin Jan, the entire offense is returning as far as skills. Not sure about the Bigs. Moran is moving to Q from Safety so they should still be considered a front runner in D1 if not the favorite.
On Defense, they have 1 starting DL returning, 2 LB starters (one is a Junior) returning, 2 DB's returning losing Moran at safety, moving to QB. They have great depth however and will be strong again. What they do have returning is great coaching. IMO the Offense will be very strong in the backfield and receivers. The OL will return both OT, Woodward (look for big things from this kid) and OT Bustamante another great player. They have great size in the depth charts with a kid from Kansas, and Chick is a great coach.