[LouisVanDerWright]

There's not going to be a core in the middle because the middle will apparently have a massive lobby over a roadway. My guess is that there will be a hotel core in the right leg of the tower and a residential core in the left. They might share the huge lobby in the middle or might have separate entrances, but barring an extra expensive bit of engineering over the LSD axis, there probably won't be a core in the middle.