It's been a long time since UConn's played meaningful games against Seton Hall and St. John's. Obviously that changes with Pitino taking over, but from a fan perspective, over the last 20 years, I don't think those two schools have much more juice, if any, than Iowa State, Oklahoma State, K-State, etc. Creighton, Xavier, and Butler, even though they're good programs, don't really do much to move the needle, either. DePaul is obviously a write-off.
Losing games with Georgetown (assuming they get good again), Providence, Villanova, and to a lesser extent, Marquette, would hurt a little at the box office - although Kansas probably cancels out Villanova.
On the aggregate, though, I don't think ticket sales is where this potential move hurts you - or at least not right away. What you'd miss is the synergy of a basketball-first league, the recruiting hot spots, and more than anything, MSG in March.