Good points. Another thing I like is that the trams are "pure things" whereas the hearts are painted-on things. (I don't like my current five graffiti stars as much as I would like a nice shot of 5 real objects.)
I agree about the trams being "pure objects" making them better. And now I've gone and swapped my 23 shipping containers for 23 cakes that are just pictures on a menu. Mostly because I'm using the containers in the Count with me again.