I don't think this will succeed. The age of unmitigated greed has just died (again, third time I think), and the local populace won't stomach this sort of sky-grab. It's rather appalling to think we would knock down sound buildings less than forty years old to build bigger ones that we don't need and that mess up the look of the city. Why don't they just give up and renovate the pile into something else? It would make a fine retirement home for superannuated socialites and decrepit matriarchs.