Honestly, if we are talking pie in the sky, I'd say pile people up along the coast. Specifically in LA, if you had fewer people in Riverside with lawns + AC and

Honestly, if we are talking pie in the sky, I'd say pile people up along the coast. Specifically in LA, if you had fewer people in Riverside with lawns + AC and more people in Santa Monica with year round good weather then the quality of life would be better and environmental impact would be lower. Do I think it will happen? Not quite.