I think whether Bledsoe comes back or not will be left up to him. I doubt that he would come back as a back-up, but only he can say that for sure.
Flo will be here at least another year. BP has already tagged McQuistan as the future left tackle, but I'm sure he isn't ready yet and won't be until the end of next season. No need to rush Flo out the door yet. There is enough cap room to keep him.
Rivera has ups and downs and as players get older they start having more downs than ups. I think he might retire, depending on how this season plays out.
Barring a major explosion or implosion, I think T.O. will be back. I think Terry Glenn will be back. He still has his speed, moves, and hands. If his knee holds up he'll play next year.
Al Johnson is probably gone. Somebody will pay him a lot of money, and he'll play well for them. We'll offer Gurode a lot of money and he'll probably stay. I liked Johnson, and thought he'd win the position, but Gurode is having an excellent year and I think we need to keep him for a long time.
Al Singleton is like a security blanket for BP. If BP drafts another tweener LB in the first round, he'll be gone.
The Cowboys liked Matt Baker enough to keep him on the practice squad, so, I doubt they'd draft another QB. They will probably wait until after the draft and sign another undrafted free agent to compete with Baker and to have another arm for camp.
Aaron Glenn may finally retire, depending on how the season plays out.
As far as the draft goes, it'll be defense again. It may seem boring, but defense wins championships. My early predictions: First day: a big NT probably to be ready to replace Ferguson is a couple of years, then another CB and yet another OLB. Second Day: OL, OL, WR/RB/KR.