Really like that paintover Ben.
Just to add to it a bit (maybe you can get some more ideas from this Justin) to also help break up the tiling on the back buildings (besides fixing the texture seams) maybe try adding some smaller windows. It looks like that area could be a stairwell. And for the building next to it (the right one) maybe make a quick canopy and place it over a couple of windows, this will help break it up some more.
I really like the sand idea Ben, so maybe around the sidewalk edges (road as well) you can add some wear and tear decals to it / or sand build up (defiantly where the sidwalk meets the road).
The house's pillar texture has this repeating black spot on it, I don't know if this is just a temp model (i know you had sculpted a pillar) but see if you can match more of the texture to the building? Unless its different then stone / concrete... maybe wood?
And also the front walls there, I think you should reaaallly try and break those up a bit, because its blending way to much with the backwalls (which I think should be a different texture... or something different, graffiti maybe?)
And for framing purposes (and just to busy up the scene a bit more... if you need to) why not try bringing that one phone / electric pole over a bit so its actually in the scene. You can also add some transformers to it to bulk it up some, would look pretty cool I think.
Annndddd... the focal point
I still can't figure out really what needs to be placed in the scene, but its like... you have everything else, and now you just need that 1 thing that makes everything come together. I know we talked about a car or something, but I also know you want to get this scene finished off, but it needs something...
It's coming together, I think if you hit Ben's paintover (the lighting as well, fits really well) you'll have a solid portfolio piece man
NAPPLES NAPPLES NAPPLES!