The best solution would be to add the four eastern-most members of the WAC; La Tech, UTSA, Texas St, and New Mexico St, and put the WAC out of it's misery.
Before any of you start moaning and complaining about the possibility of adding two teams moving up to FBS, please consider this: The WAC in it's current desperation mode has not only offered FBS membership to UTSA and Texas St, but WAC Commissioner Karl Benson is also talking to Lamar, Sam Houston, and Stephen F Austin. I believe that the Texas market is already fairly saturated with ten existing FBS schools, and the result of all five of these teams moving up will be far too many teams and too much competition for limited resources. Moving the additional Southland schools up to the FBS is not good for us, and it's not good long-term for the current WAC schools.
Eliminating the WAC while bringing these new programs into the Sun Belt will increase the value of the Sun Belt's media package through added markets while eliminating the competition for exposure.
New Mexico St
In football this divisional play, roughly divided by the Mississippi River would save most schools enormously on travel costs.
A fifteen school basketball conference (including UALR) would give seven home conference games and seven road conference games to each school. The "WKU never has to travel to Denton" issue would be permanently solved.