Thanks, Paul, for the great advice.
I am just about to start populating this quadrant with "stuff"; I have been looking forward to this for weeks. I think trees will make a huge difference, too.
My glass is opaque, since all of the buildings are just shells, but I will experiment with a bluer glass and see what it looks like.
I am torn with the pavement. Right now, I am just using a solid color because I find that the asphalt textures really flicker badly when animating. I agree that I need to do something to make the roads look more realistic.
Thanks again for taking the time to jot down your suggestions.