I've seen a couple of these pictures before and love the way they record a time of great transistion. Still a lot were also new to me, that one with the general motor's building being constructed was a real find.
As for the aesthetics, well, that opening a whole can of worms. Whilst I agree that structures like On Chase Manhattan, are bold, handsome buildings, they were nonetheless very disruptive. They were huge and without setbacks so required large, windy plazas cutting of the building from the rest of the street. The Seagram, maybe not big enough to effect the skyline certainly had a huge effect at ground level with it's raised plaza.
I guess it kinda set the trend for vast boxes, without shop fronts at street level that became cities in themselves.
But it's all subjective in the end.