The problem is multi-level.
Yes, NYC is a problem for a number of reasons. You have to fly, hotels are expensive. At least Chicago only has the 2nd part of that problem, Indy has neither.
But adding the 5th day is going to be a problem no matter what. Nobody is taking an extra day off to go to those, and no matter where you put it, those fan bases aren't going to worry about it, their teams had terrible years. They are probably just rooting for the season to be over. I think they could have played those games on campus last night, and you'd have had problems.
Speaking of that, what about it? End the conference on Saturday (no Sunday games the final weekend) and play those play in games Monday or Tuesday on campus of the #11 and #12 seeds? The start the tourney in earnest on Thursday as a 12 team tourney?