Kiffin had two undersized walk-ons starting on the OL. The Sullins played really hard and I was a big fan of their work, but not only is the OL in better shape now it's in waaay better shape. Ditto for the DL and QB. I'm not sure you couldn't throw LB in there too. In order of importance I'd rank quality line play at the top. QB play is just behind it.
I agree that line play is the most important, not because it's MO, but because I have heard Switzer, Lombardi, and Neyland all say so. Having said that, IMO this is the best OL we have had at Tennessee in a long time, maybe going back to 2001. DL...not so sure. Best since 2008, maybe. Our D was not the issue in 2008.
We are short on talent on D compared to O, but have at least a half dozen quality SEC athletes. I think most of our D could start for lower SEC teams, which unfortunately we are right now, but a few could start anywhere in the conference. We definitely need shoring up on that side of the ball. I heard last night that Bill Snyder likes Juco players because they come in hungry. McCullers and Sentimore have done fine for us this year, maybe we can grab a couple DBs, get Randolph back and at least be competant back there.