This is just my take on things, but I feel like what you are describing is not street photography. It is cityscape photography (which is a lovely form of photography in and of itself). Essential to good street photography, I think, is the confrontation between the photographer and the subject. If the subject knows they are going to be photographed, they have time to compose themselves and hide their raw emotional state. This, as Kip has said, takes platinum balls.
Street photographers are the close-range assassins of photography.