[ardecila]

Deleting the cube crown in favor of extending the window wall isn't necessarily value engineering.

The tower after that last setback has a floorplate that's probably too small for apartments plus a stair core, let alone an elevator, so they're not gaining any leasable space.

The only question is whether they save money pouring a couple of useless floors with the same methodology as all the lower floors and enclosing it in glass, vs doing a customized pour on that level for the open crown. It's probably not a huge cost savings either way.