Three decent players, one weak link (right tackle), and a highly-rated rookie. 'Pretty solid' seems accurate to me. It wouldn't be the best line in football, but it would also be far from the worst.
Whether Peters is here or not, its up to Trent Edwards to become our Kurt Warner, allowing us to become the Cardinals: a high-powered offense, despite a mediocre offensive line. The skill positions are jam-packed with talent, and therefore set up perfectly to emulate Arizona. Peters would absolutely make things easier on him, but whether Peters is here or not, its up to Edwards.
Early last year, when Edwards played well, and Peters was either on the bench or below his potential, Buffalo had success. When Edwards went down, Losman was awful, and they lost. Likewise, when Trent returned and was awful, the Bills continued to lose-- despite the fact that this is when Peters was supposedly back to his Pro Bowl form. Good quarterback play equals wins, lousy quarterback play equals losses...regardless of Peters' status.
Again, it would absolutely help Edwards to have big #71 on his left, I wanna be clear on that. But Walker would be still be competent at protecting his blind side to the point that, if Trent is the guy, it ought to come shining through. We'll just have to keep our fingers crossed and hope he's up to it. Just one fan's opinion.