The Big East would have to double in size to have it make sense.
Either:
Providence, Georgetown, Seton Hall, St Johns, UConn, Villanova
Butler, Dayton, DePaul, Marquette, St Louis, Xavier
Creighton, Denver, Gonzaga, Loyola Marymount, San Francisco, St Marys
or
Providence, Georgetown, Seton Hall, St Johns, UConn, Villanova
Butler, Davidson, Dayton, Murray State, VCU, Xavier
Creighton, DePaul, Marquette, Northern Iowa (or move Denver here), St Louis, Wichita State
Denver, Gonzaga, Loyola Marymount, San Francisco, St Marys, either Weber State and/or San Diego ("and" if you don't take Northern Iowa)
The 2nd option limits travel and is more ideal. Gonzaga would be playing the Northeast schools once every three years (2 trips year one, 2 trips year 2, 2 trips year 3).
You kill off the WCC and take important pieces from the A10