I get what you're saying and you make valid points. Although I will add SNY added UConn prior to the original Big East blowing up. The channel allows them to produce content and shows tailored made towards the teams, which I'm sure any St John's fan would find beneficial if we were in the same position. We get some of that content but I don't even believe it airs anywhere except online. SNY still has UConn shows even though they are back with the Big East.
I wouldn't say UConn brings nothing to the table for the Big East. Remember, they are considered the pro team of Connecticut, so you now get all of those eyeballs on the league. The really only other benefit is their tradition/history of a winning program.