The Giants and Saints offensive lines worry me a little bit, because I think they have some players that are not that good and could be problems. Eli Manning and Drew Brees are masters of getting into good play alignments and more importantly mitigating the rush with pocket awareness, Brees is especially good at it in my opinion. The Giants have some versatility allowing them to move guys around comfortably to get 5 solid starters. The Saints LT spot might be a problem with Armstead, C. Brown, and J. Smith. I am not sure why Brown hasn't played much in his career, but it must mean something that he hasn't. I do not think Armstead is very good right now. I don't think that Ben Grubbs replaced Carl Nicks impact wise, he may not seem like much of a downgrade on paper, but from what I saw he was. Chris Snee has declined as a player, he still has good stretches though. Jahri Evans is the only dominant player on either offensive line. I don't like Justin Pugh very much and I think he'll get beat in space more than the Giants are comfortable with if they think they can leave him on an island.
Jonathan Martin was very unimpressive at RT last season, now he moves to LT for the Dolphins. Reports indicate that he has turned things around and is playing well on that side, but I am still skeptical and eagerly await seeing him in the preseason.
If Sam Young starts for the Bills he might be a target for teams to go after. I have never liked his balance and footwork, but he wouldn't be the first Bills OG I've seen improve from a scrub. Levitre was the first, I highly doubt Young will be the second.
The Chargers line still has a lot to prove. Rivers can't make his offensive line better the way that Eli Manning and Drew Brees do, he needs time and he needs confidence in his linemen. I am not totally sure if he'll be happy with DJ Fluker's sloppiness because I think he won't be sure whether or not he's going to get beat which may cause him to default to getting rid of the ball too soon. Having Fluker at RT may help with this type of thing because of the line of sight for right handed QB, I feel that this theory helps explain why Michael Oher plays better at RT too. When I watch QBs I try to think about the confidence they have in their linemen because I think it goes a long way in how aggressive they can be from the pocket. Shaky OL play rattles some QBs and makes they too quick on the trigger.