The way I see it, sure we haven't lost that many players, but we're installing a new offensive scheme. Now, in this scheme we're expecting to throw the ball a lot more. The problem is, our QBs aren't exactly comfortable with throwing the ball in this offense, or even at all. I'm afraid it may be less of a QB battle than a "who can step up and throw the the least-bad."
Bo was extremely lucky the past few years having studs at RB and having great Defenses to fill the void at the QB position. I feel that is why he was able to succeed here. Now, we still don't have a great QB and we're missing the safety net at RB while switching the offense to highlight passing. Sure we have better coaching, but if we don't have the resources to utilize in their philosophies, how much good does it do?
I don't think we'll win 10 games this year. I think we have the potential to if we're shown something completely different than what we've heard out of practice.
Maybe I'm wrong though, at we see sort of a repeat of the 2009 season. Bad offense and a good defense that will carry the team to victory.