If you don't mind me interjecting an A&M analogy, I see Bo as y'alls Mike Sherman.
Here's what I mean:
We had Fran. Fran was TURRIBLE. His recruiting was crap, he damaged our relationship with a lot of Texas HS coaches, and shat all over a lot of our traditions. He had a couple of flashes of greatness, but nothing panned out. Then we brought in Mike Sherman. He righted the ship. Recruiting got better, relationships improved, our traditions were honored, and the team started winning again. HE was never able to win the REALLY big games (although he did beat Texas a couple of times). He was never going to be the coach to win us championships, but he laid the foundation for a great team down the line...a team that Aggies are starting to see now with Kevin Sumlin.
This is the point where Nebraska is. Bo has repaired the damage done to the program by Callahan, but I just don't see him coaching y'all to a Natty or even a B1G Championship. It doesn't matter if he gets you to the CCG if you keep getting blown out. Bo is a good coach, but he's not a great coach, and he's not the coach to bring the Huskers to the next level. Like I said, he's your Sherman. What you need it to find your "Sumlin." Who is it that can take Nebraska to the next level?
IT seems simple enough, but finding the right coach is never easy.