I don't think there's anymore non-football schools that would make a basketball league feel like a super league. Dayton, St. Louis, VCU, Wichita State, Davidson is...not it
It'd require a massive Big East transformational shift into something far more ambitious than is currently there. To be by far the best basketball conference, we would, yes, have to offer football and poach from the Big 12/ACC.
Football teams: Baylor, Houston, Kansas, Louisville, Wake Forest, Duke, Pittsburgh, West Virginia, Syracuse, UConn, Arizona
Non-football: Providence, St. John's, Seton Hall, Villanova, Georgetown, Butler, Xavier, DePaul, Creighton, Marquette
... never happening