I respect your football knowledge, Bill, but even your example reinforces my original point. You mention three playoff teams that have drafted OL (though I am not sure from your post whether their drafts were so very different from the last five Buffalo drafts) but the original post mentioned two other playoff teams that were built very much like the Bills. Glancing at all the playoff O-lines, I am struck by the great variety of strategies used to build good teams, and am also struck by how much fortuna is involved. I am sure that people who know more about these things can make marginal improvements, but on the whole I am not convinced that there is any single formula that can be applied with universal success. Heck, Bill Belichek should be sending flowers to the Jets the rest of his life; without that hard hit on Bledsoe, Tom Brady would still be an unknown.
(I know, I know, that last example is not OL-related, but it is a good example of the role of the unpredictable and unforeseeable in sports success.)