The Durst Organization and the Port Authority of New York & New Jersey released a handful of new interior and exterior renderings of a value-engineered version of original designs for One World Trade. Clearly the long-term maintenance argument won out over David Childs’ proposal for a sculpture-clad spire instead of a simple antenna. The resulting design seems far more efficient, if not aesthetically complete. Noticeably absent is Silverstein’s yet-to-be-leased towers Two and Three, which won’t rise until an anchor tenant is found. But neither collapsed cranes or a fire this morning will slow the tower from its relentless climb.