Used to be when unlimited recruiting was allowed, NU would recruit 10-15 running backs and very few DBs. If a player washed out at I back he would be moved to DB.
Different time and a different team! I can't say enough how people our undervaluing the LB spot. Sure you could throw a dozen athletes into the position. And you would end up with a bunch of half a$$ LBs, who can't tackle to save their lives. (And frankly we have to many poor tacklers to begin with!)
LB is NOT a throw away position. It may well be the most important on the defense!