My main concern is chemistry on both sides. There are a combination of new players (Robinson, Babin, R. Smith, Wade, Bruener), players in new positions (Wand, Pitts, Coleman, Wong, and for that matter Babin), and guys coming off injuries (Walker, Glenn, Payne and Baxter, if he starts) who will be starting. This list includes 5 of our front 7, as well as, 4 or 5 of our 7 blockers (if you include FB and TE as blockers) and 3 of our 4 in the secondary. Those are extraordinary numbers when you think about it.
That is why I refer to this season as a "transitional year". After this season and moving forward, I think our roster will only see a couple of changes yearly (as long as Capers is here).