If Providence had enough fans we would've been playing them at MSG for years, instead we perennially play them on campus.
I think that speaks for itself.
And I'm not sure the league will be expanding anytime soon, so the current fan bases will need to step up. This year will be a test run. I think there's more than enough support for St Johns, Nova, Georgetown, Marquette etc to sell out the finals and semifinals of the league's tournament. I ust don't expect it to be the same as it was tHe old BE tournament was unique, never to be replicated.