I think Ira is right - Bo would never have stayed. And on top of that, Callahan wanted Cos, so the odds were nil that it would have happened.
BUT, if it had, it could have been a pretty good deal for us. It's a small sample size, but averaging the three Bo Pelini defenses and the four Bill Callahan offenses, you get a team that scores 28 points a game and gives up 18.
That's winning football.
But, of course, it went far beyond wins/losses with Callahan. He changed the culture too much to stick around. He was never one of us. He was never going to be a permanent part of our landscape.
All things considered, I'm glad there's no way Callahan woulda coulda shoulda stayed.