Someone should take a trip to the City's permitting department and review the permit set of drawings. If I were not 3 hours away, I would do it myself.
I have completely redesigned the look of the building and have maxed out the current permitted height putting it at 582 feet. I have a relatively basic PDF of the new design but can't find a way to post it here. I'm sure it will be out there sooner or later. Paul Levy is going to put it in his next Center City report.
The redesign has put us back to July or August for breaking ground.