I think if the Big Ten somehow gets those four you mentioned then I don't see the SEC being satisfied with "sloppy seconds" but stay at 14. However, the Pac 12 might look into adding a T.C.U., Texas Tech and maybe a Houston or Rice with Kansas State to round it off, since they can't afford to be picky like the Big Ten. The ACC would just take in West Virginia and probably Cincinnati or Iowa State, unless ND does the unthinkable.
ISU, WVU, Louisville, Pitt
BC, Cuse, UVA, VT
UNC, NC State, Wake, Duke
GT, Clemson, Miami, Florida State
T.C.U., TT, Rice/Houston, KSU
Colo, Utah, ASU, Zona
SC, UCLA, Cal, Stanford
Wazzu, Ducks, Ore State, UDub