I don't care to comment on the original premise of this thread, but "grossly overestimate"? Why do you think that?
SU is a premium brand in the best college basketball conference in the nation. It draws more people to it's games than practically every other program. It is the defacto favorite college basketball program of the metro NYC area, even though the school is 250 miles away. Given what's gone down on the football side this season, there is every reason to expect that the next HC will be compensated generously.
I'm not suggesting that when the time comes we'll get Greg Poppovich to coach here. But to suggest that no one coaching at a P5 would come here seems far-fetched.