I don't disagree with the notion that Wagner could set the market, but I just don't buy the idea that he will blow the lid off of it. The demand for good pass protecting OLs has always been there, but I don't see why all of the sudden a team overvalues for someone who while is a good RT is not the best in his group. Maybe he hits that 7M per year mark, which to me isn't that big of a deal considering it's 300k more than Ryan Bulaga.
Thing is, like you said I don't see teams scrambling for the RT position. No one is really desperate nor has there been GMs screaming for good RTs in the draft, you see that with S, CB, OLB, and LT, but you don't see the same amount of emphasis on the RT position.
Going back to the Von Miller argument, Mitchell Schwartz who was seen as the No.2 RT in the entire league used a similar argument to justify a pay-day for him and it didn't work out. That was after Miller's insane season, he didn't really have the same impact this year as opposed to last, so I don't see how teams will now realize that guys rushing from the right side all the sudden makes a RT more valuable.
Teams want a good pass protecting RT, but more than that they would prefer a good pass protecting G/C/LT. You brought up Zeitler, and I think he gets the K.O treatment and receives a mega-deal, I would even go as far as to say he might exceed the deal that K.O received from Oakland. Teams love maulers who can pass protect. There's also Lang and Leary who are going to be well-compensated. I think that maybe a team goes 200K higher than us, but unless the difference is in millions, I don't think Wagner leaves.