@FarmerJayhawk
I wouldn't put the PAC into the same category as the Big12 or even ACC. I think the PAC has a unique demographic advantage that is very desirable-- the entire west coast.
My opinion: The 3 conferences with the best positioning for the foreseeable future are SEC, B10 and PAC.
These are the 3 Kings.
All 3 are headed toward a natural state of equilibrium that is 16 schools. The SEC is already there with the addition of Texas and OU. The B10 and PAC both have 14 schools, so they could add 2 schools each.
In this ecosystem, there is room for one more super-conference. (Four super-conferences provides 64 teams for a natural playoff bracket for all major sports. It covers the timezones for the networks and it avoids saturation.)
That fourth conference is to be determined... but the B12 and the ACC do not have the mass/gravity to hold together while in such close orbit. They will pull apart at some point and there will be reformation to a new conference of 16 schools that will join the 3 kings.
An inevitable game of musical chairs is coming. Any schools not already comfortably sitting in one of the 3 kings, would be vying for those 16 spots -- including the remaining schools from the ACC, the Big12 the AAC and the Big East... not to mention a few from the Big West will try to make a case.
Avoiding this game of musical chairs is another reason (on top of all the points previously made) why it is important to secure a spot in one of the 3 kings... (and SEC and PAC are non-starters, so it has to be B10).