I think it all looks very nice, but i think its all a bit dull, there isnt much happening except for the train going in and out. The lighting is very nice on the front but maybe you could add something more to look at.
i agree, more people would crowd the scene. i really would have liked to see the guy checking his watch get on the train.. and maybe come back down the stairs. I dont know if that could have fit in a 50k file though.