Being a Notre Dame alum and growing up a huge Cyclone fan, my dream scenario is this:
The ACC schools challenge the GOR and 6 teams join the Big 12 to make a Big 16. Imagine the Big 12 poaching Florida State, Clemson, Virginia Tech, Miami, Louisville and Notre Dame. Add them to blue bloods like Texas and Oklahoma along with TCU, Baylor, and Oklahoma State and our conference would be incredible. Basketball would get a little help with Louisville and Notre Dame but our conference recruiting footprint in football would extend from Texas to Florida to South Carolina and Virginia.
The 9 remaining ACC schools could form a basketball primary conference similar to the Big East with the four Carolina schools, Syracuse, Boston College, Pitt, Virginia, and Georgia Tech. 7 of these 9 are in the lower half of football attendance in the ACC already.
And just for fun, an East-West split of the new 16 team league:
West: Texas, TT, TCU, Baylor, Oklahoma, OSU, Kansas, KSU
East: Florida St, Clemson, Miami, VT, Louisville, WVU, ND, ISU