If FSU and Clemson are that unhappy, then join with the top football schools of the B12 and be done with it.
FSU, Clemson, Texas, Texas Tech, Baylor, TCU, Oklahoma, Oklahoma St., add Georgia Tech and Miami, then consider two of West Virginia, Louisville and maybe Virginia Tech.
ACC is reduced to North Carolina, Duke, NC State, Wake Forest, Virginia, BC, Syracuse, Pitt, and either Louisville or Virginia Tech, or maybe both.
ACC then backfills with 3 (or 4 if VT & Louisville go). Candidates: UConn, West Virginia, Cincy, UCF, USF, Memphis, & Temple. Possibly even Houston.
Kansas, Kansas St., Iowa St. are then lost in the wilderness.