i like the street signs. i think they add a nice touch that brings me right into the world, for some reason. rock on, todd.

In these images the street signs are the only elements that give the masses/volumes a scale. If this is important, you may want to consider another element to imply human scale.

Would it be possible to keep one street sign constant at the corner of the image, as a avatar-like element, and change the names/numbers?

For those that are familiar with the urban grid, the signs also provide some sense of orientation. However, this could also be achieved through the use of shadows and infinite one point light source.