I'm 100% behind the proposed redevelopment of the World Trade Center site. There'll be a proper memorial, but the World Trade Center was about commerce and the life of the city. The design of this development is exciting (unlike the original Trade Center) - lots of commerce, great height (for which NYC is famous) and even windmills to generate energy for the building (simultaneously an interesting and silly idea, but so what?).
I'm not an architect (any views Frank?) nor even a little arty, but I do like the look of what's proposed here.
Most importantly, lower Manhattan will live again and not remain a permanent grave site and memorial.