Well, Texas has decided to stay in the Big 12, even though Nebraska and Colorado have fled. In response, the other five teams from Texas and Oklahoma have decided to stay in, rather than join the PAC-10. So there will only be ten teams in the Big 12. (If all of you conferences are realigning, do something about your names, so that at least they are arithmetically accurate!)
One good result: If there are only ten teams, there won’t be the need for the playoff game between the northern and the southern branches, an extra game that would always damage the record of one of the semi-champions.
As for these projected mega-conferences, I think all conferences should be smaller. The right number is Eight.