Always look forward to when these come out. The most interesting part is the differential from top to bottom in DVOA and strength of schedule has gradually increased, from then til now. Schatz says seeing the trend, it's no surprise the first ever 16-0 and 0-16 teams happened these past two years, and then asked, why is this happening?

I already commented in the thread there, that I figure it has to be league expansion. When was the last significant league expansion, prior to 1996? The Seahawks and Bucs? I don't know the answer, but in 7 years the league expanded by 4 teams, and since then we've had two roster expansions (and Polian is lobbying for another). I can't think of anything that comes close to the significance of expansion, in the raw numbers of run-pass ratio, high draft pick busts, or anything else.