It's tough but MSG trumps everything and having attended an ACC tournament game many years ago at the Capital Centre or whatever it was and the BE tournament, the venue has everything to do with the attendance etc.
The best thing the Pac 12 did, was move their tournament out of Staples Center to Las Vegas....fans have a reason to travel to Vegas for other things beyond basketball.
Washington DC while nice as a tourist attraction, isn't NYC....The B1G is better off negotiating Barclay Center or MSG as a rotation with maybe Chicago...Indianapolis is a nice Midwestern City, but there is no reason to visit their, unless you are a true diehard of the basketball tournament,
I also know that after many years of avoiding MSG, the regionals at MSG have ticket prices that are very, very high,.....it would be 1/3rd of those prices at Prudential Center or Barclays....it's because it's MSG that those tickets and prices will be very high.
I don't think next years attendance or lack thereof for RU should be held against RU fans at this stage....how many fans are dedicating themselves for 4 straight trips into NYC for that many days in a row at the cost?? Probably a good investment to scalp, but that's what the secondary market has done to prices for MSG.