I highly doubt Riley will recruit a "feature back" at NU.
People should really accept what Riley and Langs are offensively and move on from the arguments over whether he'll change his system.
Again, Riley recruited four running backs with 3,500+ career yards at OSU. Two went on to NFL careers. One was pretty legendary.
If you're going to insist we not expect Riley to do things differently than he's done before, you need to be consistent.
And maybe he does want to do something different with the pieces Nebraska gives him. It may be why he took the job.
Who were those backs? If you're including Steven Jackson (I assume he's the pretty legendary running back), he wasn't recruited by Riley and only played one season under him (notably, his worst year from a ypc perspective, though he did register some 400 receiving yards).
Who are the other three? Rodgers, Bernard and who?
You should really go back and look at the stats; for example, in Rodgers' highest carry season (at 273 attempts), the QB that year threw it 446 times (almost 200 more attempts throwing than carries for your best RB).
Compare that to Derek Henry at Alabama this year. He had 395 carries compared to Coker's 393 pass attempts.
I'm not arguing that a RB in Riley's system can't be productive; simply stating that there's almost no evidence that Riley will ever employ a "run first" system.