I'm starting to hop on the "We need a massive 400 lb NT" bandwagon. I don't care if he gets pressure on the QB or not, so long as he doesn't get moved out of position. It's hard for the linebackers to hit a gap when the gap doesn't exist because our NT is getting dominated so badly he's in the backfield.
As far as linebackers, I'm disappointed, but not surprised. We went to a 4 linebacker defense with what, one returning starter? Then we lose A Moore out of the group.
3-4 good juco pickups and we could have a good defense next season. (Massive NT, a replacement for Rob, and two decent linebackers.)
Our secondary will still be sexy regardless(assuming Josh is playing next year.)