When New York’s Museum of Modern Art unveils its new Manhattan home next month, a private party for the city’s arts elite will kick off the festivities. Oh, sure, you can see the new MoMA ahead of time for a mere $75 membership contribution (and, truth be told, that’s probably your best bet if you really care about the art,) but why visit with the plebes when, for $2 million, you can get invited to the most exclusive event of the year? The museum will tell you the guest list for that event is closed, but don’t you believe it…