I think the 4 corner schools would be a good grab and fill that late night time slot. Might mean an 8:30 kickoff but with the rules they are suggesting changing to speed up the game, I think we won't see so many 4 hour games. IMO, if the 4 corner schools jump, stop there unless Oregon and UW want to come along. Then by all means yes, even though it is likely they will leave a short time later. If not, great. But I believe the ACC is next on the chopping block, after the Pac. I know the SEC is eyeing about 6-7 schools in the ACC and the Big 10 is eying a bunch too. If the Big 10 take Oregon and Wash, that leaves them room for 2 ACC schools, 4 could go to the SEC, if the Big 12 could poach 4 schools you might have enough schools to override the GOR, I don't know the particulars, if it would require 8, 10, or more schools to override.
Assuming the GOR can be overridden, I think a lot would hinge on UNC. UNC has been courted by the SEC in the past and I would imagine UNC would be the top pick of the Big 10 followed by UVA and Miami. I'm guessing the top 3 of the SEC in no order would be FSU, Clemson and UNC. Georgia Tech is interesting for the Big 10 because it would give the Big 10 a presence in the Atlanta area as well as the state of Georgia. My gut tells me that if UNC were to go to the SEC, the Big 10 would take 2 ACC schools (UVA and Miami) and Oregon and UW to get to 20. The SEC would go after Va tech, FSU, UNC and Clemson. We could add NC State, Louisville, Ga Tech and Pitt. I would prefer those 4 schools over any G5 schools (maybe Memphis to tie the east coast schools back to the rest of the league) or whatever is left of the Pac. However, if we did add a Cali school, we might be the only conference in the 6 biggest recruiting states: TX, FL, OH, GA, PA, CA.