The "planet elevators" I've already gotten rid of... sure, they're nice, but they don't look like real cities anyways.... what else can afford to be lost?
Let me start off by saying I have nothing useful to contribute to this topic.
Second, those planet elevators do not look like cities because they're not cities. They are, in fact, planet elevators. Basically, the actual city-like things are just space stations which are connected to the planet via a massive elevator cable. This allows people and goods to travel from and to the space station. Just thought I'd clear that up.
Sorry about the off-topic post, but my extreme boredom forced me into doing that.