PAC won't be raided. B1G and PAC alliance goes back way too far to let that happen. SEC doesn't want that time zone. They don't need it. ESPiN doesn't care if SEC wants to stay east. B12 is in no position to raid any P5 conference.
B1G has always had eyes on more landscape in the eastern seaboard. UVA and UNC are AAU schools that fit right in with the expanded footprint that B1G covets.
SEC would take Clemson and FSU in a heartbeat. That would give SEC the two best FL schools and the best ACC school to go along with USC. VT and NCSt would be after thoughts. But given the chance Clemson and FSU would jump in a heart beat if the B1G demolished the Tobacco Road contingent.
The Big Ten would want any new school to be part of the AAU. The only exception to that rule being Notre Dame.
There are 64 AAU schools in the United States and 2 in Canada.
Membership in the AAU is by invitation only, and a Membership Committee evaluates non-members and current members for invitation status periodically.
In order for schools to be considered, the universities have to pass two phases of indicators, with requirements ranging from memberships in national academies such as the National Academies of Science and Engineering and the number of research and scholarship Ph.D’s approved every year.
In 2011, when Nebraska was planning on their move to the Big Ten, controversy rose when they were expelled from AAU. The first time the group expelled a university in 111 years. The expulsion didn’t severely affect Nebraska’s chances of entering they were already approved before expulsion, but it does dim the allure of the university in the eyes of the Big Ten.
Currently, every member of the Big Ten except for Nebraska is an AAU member. In order to expand the conference, the Big Ten would want any new school to be part of the AAU.
Joining the Big Ten conference has its major benefits, with the notoriety of it being the most stable conference North of the Appalachian Mountains. However, the AAU is a massive hurdle for conferences to overcome.
UVA, UNC, Duke, Pitt and Syracuse are the only ACC teams that are AAU. In the Big 12 there is Kansas and Iowa State. Texas is AAU but chose the SEC already.