I agree 100% with your final paragraph. Unlike on the defense, where all positional units have been upgraded to ACC-caliber talent throughout the two-deep, on offense OL, TE, and WR aren't where they need to be.
I do want to note [and this isn't directed at you specifically, MikeSU02] that we're down several linemen who were projected to be starters. Ellis had started the previous 1.5 seasons. More, and Wohlabaugh were emerging from camp on the 1st team OL, and More didn't play until Q4 of the 5th game, and Wohlabaugh suffered a season ending injury in the 2nd game.
That's a lot to overcome -- ESPECIALLY for a team that hasn't traditionally fielded quality OL units. The depth that people are questioning is comprised of a pair of guys who should be on the second unit, but who were called upon to step into a much bigger role due to injuries. They'd performed admirably -- not great, but serviceable -- up to this point, but no surprise they got dominated by Clemson.
We just have to hope that More is better in some capacity than either Bradford or Petry [whoever he's subbing for], and that Ellis can get into better shape. We need the reinforcements.
But if Bradford / Petry [and especially Petry] hadn't been ready... my god, can you imagine how the season would have already been derailed?
Again, Mike -- not directed at you -- just thinking out loud, for perspective on how the OL has performed.