Nebraska has no "traditional rivals" except Oklahoma. Playing a team 13 times in 120 years does not constitute a rival. For crying out loud, Nebraska played Penn Stae 2 times in the last 25 years. That is not a rivalry. I would bet that you could go through and do the same thing with Nebraska and ACC teams and PAC 10 teams and Big East teams. I mean Nebraska has had Pitt and VT on their schedule twice the last 5 years does that mean they have traditional rivalries with the Big East? No it doesn't. Nebraska went to the Big Ten for money and stability. That is it.
So Colorado playing a single game with each PAC 10 team over the last decade means they are now rivlas? Sriously? It only takes on game to make a rivalry ore scheduling games with teams from the same conference makes you a rival?
I know you get sick of the little guys being accused of not being able to do it but I just saw an interview with Urban Meyer that said when he was at Utah, he wanted a playoff because he felt he could beat any team on any given day. Then when he went to Florida he didn't want a playoff. He said after one year in the SEC, he got it. Meaning it was a different world and he knew there was no way Utah would have made it through the season undefested or with one loss if they played in the SEC.
Teams like TCU Utah and Boisie have earned spots at the table. They have proved consistent success. SMU has not. Houston not so much. Besides do you really want to try and reinvent the SWAC? It didn't work the firsttime why would it work now?
Outside of the old Big 8, The top 3 schools Nebraska has played the most in school history are in the Big 10, the next two are ND and Pitt, and then another Big 10. The Big 10 if they expand again would probably first extend invitations to ND and Pitt, so yeah, that is the most natural Rivalry conference for Nebraska.
As for Colorado, I was just giving examples from the last ten years. Their history is littered with interest and games out west. I think it is pretty solid. It fits with the NFL conference allignment and MLB allignment. When you travel to a city to watch the Rockies or Broncos play, I think you are pretty comfortable traveling there to watch the Buffs as well.
Reinventing the SWC is a bad idea, but the SWC as part of a much larger conference isn't.
Houston has 10 Conference Championships (and some of those came when playing against Texas and Texas A&M), 20 Bowl Appearances, 18 All-Americans and a Heisman and Davey O'Brien winner. They have a 32,000 seat stadium of their own and a potential NFL stadium for big Rival games.
SMU is coming from Death. It is hard to look at recent numbers, but it doesn't mean a return isn't possible. Again they seat 32,000 in their stadium, but have potential to play in an NFL Stadium for a big Rivalry game. They have 13 bowls, 3 National Championships, and 11 Conference titles (again against the likes of teams we still haven't won a conference title against). Most of all they "had" donors that were willing to create a payroll system for their players. Some very notable politicians included. Turn that energy into a positive alumni that builds facilities and expands stadiums in a major conference (in a legal fashion) and their return is inevitable.
UNLV...well...no history...at all, but it is still cheaper for me to fly to Vegas to watch the Cyclones every year than to fly to Des Moines and either rent a car or borrow a family car to see the Cyclones at home. Its actually cheaper for me to see the Cyclones in Vegas than in the majority of Big 12 cities. I've made the trip before and I'd love to do it again. I think if it was marketed and packaged well with the rest of the Big 12, it would be a hit.
The Urban Meyer talk is to be expected. Couldn't one also make the argument that during his national championships there were two teams that didn't even get the shot at a National Championship game, yet beat teams from major conferences in their bowl and finished with 14 wins? I would want to secure my legacy too if I were him and also make sure I didn't speak bad about a Conference I might rejoin as a coach someday. I take it for what it is a very singular and very biased opinion that can't really be proven.