Will have 3 new starters on the OL, probably all interior, I'm guessing Poole moves to take Kistler's spot so we've got our two tackles in place. Weyer appears to be the heir-apparent at center. That leaves guard. Hines got a lot of reps there this year, we've also got Kalekini, Todd, and I think Deitrich. Good talent but will need a few kids to step up.
Skill on offense should be insane. Only losing Warren, Pierson, and Miles - that returns a ton of talent.
D-line will need a new vocal leader, losing Bienemann really stings, but they've got the guys there that should step up between Kidder, Rehm, Ginn, and Takai. Safety opposite of Hermey I assume will be a wide-open battle. I think corner will be in good hands with two very experienced corners in Dennard and Harris, also Anderson and Nelson will be ready for much more playing time. LB... will be thin, all new guys, not a lot of depth. Biggest worry I have right now.