I don't understand the infatuation with four superconferences with 16 teams apiece. Each conference is an entity of their own, and they will do what is best for their own self interest. You can no more force them to have the same number of schools each than you can force GM, Ford, and Chrysler to offer the same number of models of cars/trucks. The market may dictate similar levels (compact, SUV, mid-size, etc.), but you can't force equality.
I'm with you. At 64 teams that's still way too many mouths to feed and too many garbage schools. Conferences are top heavy. You really only need maybe the top 4 or 5 schools from each conference. I'd take these teams:
B1G: OSU, PSU, Michigan, Wisconsin, Nebraska
SEC: Alabama, Florida, Kentucky, Georgia, Tennessee, South Carolina, A&M
PAC: Cal, UCLA, USC, Stanford, Oregon
B12: Texas, Oklahoma, Kansas
ACC: Duke, UNC, ND, FSU
Then divide them up into six team divisions:
East: PSU, OSU, Kentucky, UNC, Duke, Michigan
West: Cal, UCLA, USC, Stanford, Oregon, Texas
North: Wisconsin, ND, Kansas, Oklahoma, Tennessee, Nebraska
South: Alabama, Florida, South Carolina, Georgia, A&M, FSU
While not perfect (forgive me as I threw this together quickly off the top of my head), this would be a pretty good hoops and football conference with coverage from coast to coast. Then you can have two rounds of football playoffs to determine the champ, and in basketball you can have three rounds by having the top two teams in each division play each other first.