Well, what's available in large parts of the world are unsustainable settlements, some due to their place, too prone to floods, wildfires, ... many with subsidence problems, many with aging and irreplaceable infra and so on. So what's available are raw materials, industries and knowledge to start building something new. On the table we have the smart cities, natural evolution of present dense cities and distopic nightmares like the original Fordlandia. You can read about Google Sidewalk labs or Arkadag, Innopolis, Prospera, ... to form an idea of the near future. I prefer something else.
Personally I left the big city for mountains in a not too far area, with enough services and there I see the green new deal working, in kWh terms I consume much less (considering I do not consume gas, diesel, petrol etc anymore), my life quality is improved much, local economy works better than many others so... I propose this as a model.
