Gates has been hurt for two seasons now. He isn't the same player he was back in 2006. LT isn't going to get better. Rivers, yeah, I think he will shine this season.
Even if not, the offense is fine even with those guys hurt. Biggest thing will be the defense. Merriman's back and Cromartie was also playing all of last year injured. If he can play anywhere near the level he did his rookie year, that would be huge.
Don't get me wrong though, the Raiders are improving and I think they'll easily take second place, I just don't see them winning the division.
On topic though, Cutler's great and all but I think the Bears gave up a lot.