The PDF that
@CandyCanes posted goes into a lot of detail. For the 200 level it looks to just be removing half the stairwells
Granted, reading it over again it does look like they are planning to somehow make the concourse in each level bigger by removing those stairwells. But how they hope to accomplish that I'll need to figure out, because I don't see plans to move current concession venues back, so I wonder if that will actually reaolve choke points all over the arena. Especially when the bathrooms are some of the biggest issues around crowding and they aren't doing anything to the men's restrooms.