Maybe you should have choosen another viewpoint. The picture has 2 subjects: the Hall (architecture) and the morning rush (street photography) It's better to stress the one or the another.
I have to disagree. Have you guys ever been in Grand Central Station? To me this image shows the masses of people rushing through the station, something that goes on daily.
Sorry guys but why do we keep trying to pigeon hole pictures into categories. Not been to Grand Central Station but have used major rail-links here in the UK. I'm with Brian on this one it really nails the rat-race.