Well it looks like at least someone is taking advantage of EA's train wreck of a launch with SimCity.
http://www.kickstarter.com/projects/1584821767/civitas-plan-develop-and-manage-the-city-of-your-d
They've only got one video which shows the terrain and how users can make their own reasonably quick. The video ain't the best as the guy talking seems somewhat nervous and new to this sort of thing.
Anyway thought some people might be interested, I will say it looks quite nice and pretty gfx-wise from the video.