Not for 2 more years atleast! I think that improvment at the second level helped the DL and DB's as well and I think that will continue to help the development of the guys around AJ and Knott.
I'm not so sure about that. Do two players really constitute a "linebacker corps"? I mean, I think that Matt Tau'fo'ou is every bit as good as those two, but he hasn't exactly had a chance to demonstrate it, has he? Let alone the trio having a chance to learn to work together as a unit--or that little matter of an utter lack of depth. Sure, there are guys coming off of redshirts--and guys who are coming in.
However, all of that represents "development" just as much as, say, an offensive line that (likely) returns three starters, several reserves, and adds a number of redshirts. A secondary that returns plenty of seasoned corners, but no safeties. Wide receivers only missing on member, but needing improvement. It's
all development.
So, while I may not be "worried" about the linebackers (actually, I'm not "worried" about any position), they certainly aren't exempt from the development that the coaches will be focusing on through winter conditioning, and once Spring drills begin.