Let's say FSU, Clemson to the SEC and NC and Virginia to the Big 10. How would the perception or reaction of such schools be if NC State, Duke, Miami, VT, Louisville, and Pitt invite the entire Big 12, still called the ACC, Jim Phillips as the commissioner, and conference headquarters in North Carolina? The alternative would be the Big 12 does the invite, but in this situation, the Big 12 allows the best ACC schools to call the shots - but has to invite the entire Big 12.
I wouldn't be surprised if you saw a full merger and maybe calling it the Allstate League with an ACC Division and Big 12 Division would make sense.
Allstate League
ACC Division
Pitt
BC
Syr
WVU
Lou
Cincy
VT
NC St
Wake
Duke
GT
UCF
Big 12 Division
Iowa St
Kansas
Kansas St
OK St
TT
TCU
Houston
SMU
Memphis (if they do the SMU, take no revenue thing)
Pac 12 Division
Cal
Stanford
San Diego St
Arizona
Arizona St
Utah
BYU
Colorado
Oregon St
There, I solved it. Put everyone in one league, sell the naming rights and keep the division names the same as the old conference names.
Top 2 Division Champs play in the championship game in Arlington since its somewhat centrally located. Or maybe Vegas since its a tourist hub with cheap flights.