several years ago the Pac-10was really quite close to expanding to a Pac-16. The 6 teams that would have been added were, Colorado, Texas, Oklahoma, Oklahoma State, Texas Tech, and Texas A&M. The hangup (excuse) the pac-12 saw was Texas insisting they keep control of their Longhorn Network
the thought was there would be two divisions: Pacific that would have all the original Pac-8 teams and the Mountain that would have the other schools
one rumor was that Larry Scott's hardball tactics torpedoed the expansion, although it was never absolutely certain that Texas was on board
College sports would sure look a lot different if that would have happened