I think Nebraska has everything needed to win except for a reliable recruiting base. They don't have any states in close proximity that produce lots of talent and there isn't much of a reason for Texas kids to go there now. Missouri kids are going to go to SEC teams or Texas/ Oklahoma who are coming to the SEC anyway. What recruiting base can Nebraska rely on? Chicago kids don't want to go live in the middle of corn fields. They end up going to Notre Dame, Wisconsin, Michigan, Michigan State, Ohio State or Illinois. Heck, even Indiana.
Nebraska does have a history of pulling some kids from Florida and used to be able to recruit nationally but I just don't see that happening without landing a home run, big name hire and the odds of that happening seem pretty slim. What is the draw to Nebraska other than an easy path to the BIG championship game? But expansion is likely to change that.