As for all the churn about the OL, I'll add:
LT: I think Morgan played pretty even with Walker in TC (maybe a tad better), but not enough to displace him as a starter. Then Walker ended up playing worse than he did the prior year. I'm not expecting Morgan to be an All-Pro, but I think LT is his best position. I don't suspect any drop off from Walker with some potential upside.
LG: Banks has a history of two things: average RG play and injuries. By the end of the season, his play was solid. We will need depth to replace him in injury but like him or not... he is a starter quality player.
C: Rhyan was put in a bad situation last year and did "OK". He certainly needs to improve...and I guess we will see if he can do that. I wouldn't have given him a 3 year contract, but that will give him the first shot. It was more telling that Monk never got a look there last year. We just got our backup.
RG: Belton was thrown in the middle of the season without playing G before. He was playing very well by the end of the season. I suspect he will be much better this year.
RT: Tom is the best player we have on the OL, so health is the only question here. Kinnard did OK as a backup. Another development player would make me feel better.
Rhyan is the player I'm most concerned about. I think the left side will be solid, while the right side could be excellent.