Updated numbers:
The Pac-12 and ACC are roughly equidistant between oru current conference (with us in it) and our future conference (also with us in it).
I also put together some hypothetical numbers adding the corner schools to the Big 12 and four coastal schools to the Big Ten. Basically expansion hurts both conferences competitively, though the Big 12 much more than the Big Ten.
Big 16: 44.1 (-10.3)
B1G 20: 44.9 (-2.1)
Pac-2: 41
Ironically, the two being left behind are better than either set of four.