Possibly - but Collins took the Northwestern job and that's not exactly been a springboard to the big time either.
Seeing Collins' struggles at Northwestern would probably make Scheyer hesitant to take a lower-tier Big Ten coaching job as well.
He can wait for a better job, like Wojo did with Marquette. Michigan and Michigan St could both open up due to retirements in the next couple years. Illinois will probably open up again. Being only 31 years old, I think it would be smarter to stay at Duke and make good money there as Assistant Head Coach, and wait for the right opportunity. If he goes to Nebraska and fails (like every other coach in history has), he will never get another chance at a big-time job.