at a high level. When I say just average I mean they don't need to be superstars to be effective. But if we have a good DL and average LB's our defense won't be as good.
I think back to some of the defenses Bronco fielded back in the latter 2000's with true freshman NT's including undersized guys playing out of position (like Eathyn or Russell T) and yet we still managed to be good against the run and get adequate pressure on the QB because of our LB play.