Going along with number 3 of Crackertastik's post, I wanna elaborate on my own thoughts. Maybe we could take a certain structure, such as a landmark skyscraper or a stadium, and pick a certain style (Deco, Post Modern, International, etc) and change window patterns, colour, and even material (stone, brick, glass, etc). We could do that with landmark structures and even make a basic building that would grow on its own. With stadiums, we could give it a dome, maybe even have the dome open and close... things like that would be great, I think.
Wow, 5 pages and 102 replies. Amazing.