BIG XVI
West: BYU, Boise State, Colorado State, San Diego State
North: Kansas, Kansas State, Iowa State, Oklahoma State
South: TCU, Texas Tech, Baylor, Houston
East: West Virginia, Cincinnati, UCF, Memphis
Would essentially kill the AAC and MWC, pretty much ensuring a playoff bid each year. Has some decent regional rivalries, decent fanbases, cool venues and a variety of locations.
Would easily be a top 3 basketball conference.