This is an intriguing idea, and some of the images do capture a bit of that "moment in time" feeling that photography is so good at portraying, but I feel like there's a little something missing here that would really make this series pop. I don't know if a better/faster lens would capture a richer depth of field and color range, I realize shooting through the streetcar window reduces some of that because of the properties of the glass/plexiglass, but I'd try experimenting with filters to see if you can find a way to get some of it back. I'm also wondering if focusing on a single person or on two people would have more impact than the dioramas showing everyone?