Yeah...adding SMU and USF is not doing anything to solidify the Big 12...probably the opposite. On the other hand, adding Arizona and ASU might actually do some solidifying.
If I were Bowlsby, as far as expansion goes, my top priority would be finding out if the continually bantered about Arizona/ASU-are-unhappy-in-the-Pac-12 rumors are really true, and act accordingly. Tap into the resources and connections that the Big 12 presidents and ADs have, and figure this out.
I have said before that the best future additions to the B12 (if any are to be made) are Az and AzSt. They are in the Mountain Time Zone, as is BYU, would not stretch the conference further to the west, and are recognized major universities. If we want to go to 16, the next ones could include bringing back Colorado (out of pity), and possibly Nebraska (also pitiful) , or Louisville (great basketball, and better football than Kansas).