I'd say your deep at LB and safety. Dennard is a very good corner, but I didn't see anyone opposite him worth noting (now that Adams is gone). Isn't Drone also a back-up DE?
DT is deep if you mean a lot of guys who are average or below. And I'd say the same about OL, but having Fonoti back will help.
Bullough at RB? Has your fanbase really bought into this? I'm sure he's tough. But he's slow, can't cut, can't make his own yards, and is a huge target. He even fumbled in your spring game. His emergence is a flashing neon sign above the cratering hole at RB. A true freshman has to step up... but won't be nearly as good as Bell.