At the end of the day, I really don't mind if this is just another non-nondescript box, so long as it well constructed and uses good materials. Even Manhattan is filled with countless office towers that are totally uninspired and featureless boxes. For example, here's 250 West 55th Street, which is now under construction:
Yes, they are utilitarian filler but they add core density, and if well made, they act as a nice contextual backdrop to the rarer iconic towers. We could definitely still use a new iconic tower or two, and although BAC East may be a lost opportunity in that respect, there's no reason kick it out of bed.