Many of the aspects of this design are based on my concerns if I was required to live and work in a skyscraper.
The primary spire would have office space that reached no higher than 70 storeys, with the remainder of the spire being a sculptural element reaching higher than the original World Trade Center. This would serve as the memorial and would be brilliantly illuminated at night.
The tapered spires would be more stable both structurally and psychologically. I also gave each floor a ledge with ladder elements which could serve as an alternate fire escape.
The buildings would be connected by "sky bridges" at the 30th storey. These would integrate the structures and serve as another means of quick evacuation.
At the base of the spires would be a large cultural building dedicated as museum and memorial space. Other lower buildings would serve as office and retail space.
The footprints of the original Twin Towers would be preserved as green spaces for quiet reflection.