The Big 12 is financially stable and all of the members seem relatively happy with the money they receive. We are competing for championships in nearly all sports and we have a long history with each other.
The point is the Big 12 is working from a position of strength. The Pac is weakening, their members are getting restless and the weaker leagues are getting more tv exposure. Now is the perfect time to try to start picking off teams. I think you go for the Arizona schools, Colorado and Utah/Byu with the understanding that if any of the Cali teams show interest, they get first priority.
You build a strong western division with Texas, Tech, Baylor, Arizona, Arizona st, Colorado and Utah/Byu.
The eastern division would include Ousux, okie lite, Tcu, Kansas, Ksu, Isu, Wvu.
Play 9 conference games with one permanent rival and cycle through 2 teams from the other division every year to guarantee every team plays each other once every 3 years.