I thin we have 3 glaring weaknesses:
Lack of depth and experience at the NT position
A true blocking TE that can help the run game
Leadership at the QB position
Other than Troup, who is going to be a rookie NT, who else on this roster is a true NT? As much as I love Kyle Williams, I see him potentially playing the 5 technique as a DE and the nose on passing situations, but I don't see him being a true NT on 1st and 2nd downs.
Offensive line is going to be interesting to see how well they develop, and I think we have guys with an awful lot of upside that could surprise a lot of people at the tackle positions. They would ideally get some help from the TEs and unless Schouman, Fine, or Nelson develop into willing, pissed off blockers, I don't currently see a blocking TE on the team.
And obviously, QB is going to be interesting this year. Our offense last year was plagued by the fact that we fired our OC and cut our starting LT a week before the season opener. I still think TE can be salvaged and we have a couple of unknown quantities in Brohm and Brown.