I see no reason Nebraska can't win the Big XII. Starting with the North, I don't see any teams that I expect to be very much improved from last season. On the other hand, I expect Nebraska to be much improved. Over the past 4 years, Callahan has taken what was a weakness the year before and turned it into a strength. The first year we couldn't throw the ball, the next year we threw the ball well but couldn't run it, last year we threw and ran well, but didn't put teams away in the second half. I fully expect that issue to be resolved this year. I think the offense could be a juggernaut.
Defensively, NU did lose 4 studs along the defensive line, but fortunately, they're back to replacing All-Americans with freshman/future All-Americans. I firmly believe Turner will fill in for Moore without missing a beat. Suh is a beast and will have a breakout season, Steinkuhler has shown the ability to play every down and hold his own. Some wonder if Potter will be able to hold his ground in the Big XII - I say yes. He's got the physical tools, its only a matter of attitude for him.
They've finally got some depth and experience in the secondary and will be able to run more than just the basic 4-3 defense that handcuffed them last year.
So in short, I see Nebraska being improved on both sides of the ball, while the rest of the North will likely be more of the same. Mizzou's defense and running game are still suspect, KSU is a one man team, CU will likely start a freshman at quarterback, ISU has a new coach and KU still doesn't have a qb.
As for the South, OU may take a small step back. Their defense will be killer, but they need a qb and an established running back. Texas will probably be better than last year. McCoy will be a year better and they've always got studs on defense.
I'll be extremely disappointed if NU doesn't make it to the CCG. I think the team showed last year that its got the athletes to compete with Texas and OU. Its just a matter of playing their best football in the biggest games. Hopefully Nebraska's gotten to that point.