Dilapidated areas of Phoenix could be reinvigorated as an area in Phoenix that celebrates its old west heritage, like the main drag in Tombstone. tear down old buildings and rebuild with old west architectural motifs including dirt streets ( remove asphalt and sidewalks no cars only horses allowed). I enjoyed my trip to Tombstone and back on my native Long Island some towns require businesses to have an old colonial architecture. Look up ' colonial mcdonalds pics ' and you will see what i mean. This would create a tourist area, reinvigorate small businesses, reduce heat island foot print ( not a lot but some ) and depending on location could be connected to light rail via stagecoach.