Wright is settled and showed potential.
Jones is at least decent and improved on his pass protecting from year 1 to year 2.
Jenkins is great when he's healthy. His back wasn't the issue last year, rather a freak concussion that kept him out for a bit. He'll be playing for a contract so it wouldn't be the least bit surprising to see him play 17 games.
Nate Davis did suck but he's going to get another shot. If he can be anything like he was in Nashville then he'll be solid, if not good. If not, then Bates takes over who's just decent.
Shelton was the starter for a playoff team last year and stole the job from a pretty good player in Brian Allen. He's decent.
I'm not saying the line is great but it's not "in shambles" as you say it is.