I think this season has a better chance of resembling 2006 than being a down year

Defensive line is also a huge question mark. The entire middle of the line is basically gone, Cam needs to prove last year was an anomaly and not the start of hitting the age wall, and one of Davenport/Turner needs to produce significantly more than 2 sacks in a season.
Yeah this is my biggest concern. If the D stinks we'll look back and think we should've seen it coming. It was already going to be hard to replace T Rex, Rankins, and Malcom Brown but then Onyemata had to go off and get himself suspended for a third of the season.

At least we have Ryan Nielsen. He's going to get the best out his guys. Let's just hope their best is good enough.