I love the tableaux one sees through subway windows. My suggestion here would be to emphasize the two seated women who are looking at each other. That is the most interesting (emotional?) element in the photo. I would consider giving up the window-as-frame idea and crop closer to the pair.
Being able to see the subjects eyes might have made this strong. The two seated women are looking at each other, perhaps in conversation, with the third woman standing over them. Unfortunately, we can't see any of their eyes.
If the window didn't clip the girls face I would like this picture a lot more. I like it for the composition, especially the old man looking down (wonder what he is looking at???), but I can't get over the clipped face.