@davidho having met someone @Noisebridge years ago who was prototyping street lamps that had solar panels and shades designed to minimize light pollution (I seem to recall maybe he was an astronomer?) I can see ways to combine that idea with some others to make cities less insufferable.

Which means, probably cities won't adopt any of these ideas and will continue to get worse as they are apt to do.

But hey, maybe they will leave behind some interesting ruins like many other collapsed civilizations have? </sarcasm>