Billy WIP

Hi, I am working on the environment for this scene and would like some critique.
It is going to be a full looping animation with(most likely) a car going past on the road in the foreground.
I am most concerned with the buildings in the foreground as they look very flat(they are planes with image textures and the odd extrude here and there) and not very building like, the only option i can think of is adding some assets to the roofs to add a bit more depth to them.
Currently the depth in the background is created by some fog pngs and some slight mist pass in compositing and I have gotten feedback to add some more fog pngs, or make them have a lower opacity.
This is a viewport render so about 32 samples.
Any feedback or ideas for the future are appreciated:)