[youtube]http://www.youtube.com/watch?v=S4swoERUXpU[/youtube]
All Paradox/ CO has to do is basically copy real-life aerial city views, and create that as a simulation and they will have a game that sells more than any of the previous Sim Cities, or city builders..
It's really as simple as creating a realistic city simulation that mimics reality as close as possible- and doesn't have the "wall of skyscraper" look.