Checking out just a small fraction of the amazing things in DC made me think that it's ridiculous to hold something like that in Indianapolis. And Boeheim was right last night - really no reason to hold it in Greensboro. I've been to Greensboro many times and there is nothing - nothing - in Greensboro.
Big bucks to stay in NYC, but I stayed in Beltsville for $70/night in a really nice hotel that was a short drive to a 25-minute commuter rail line in. I've stayed in the Sheraton in Rutherford (or East Rutherford - it's the big cylindrical building Graf you Dan see near the Meadowlands) for similar deals and it's a slightly longer bus ride in, but the system isn't that bad.
Chicago would be great, too.