Coldmirror

In my opinion there must be some more types of planets, maybe Whaterworlds etc. . I dont know if i am the only on here, but on every planet are the same cities, and the cities of the differet races nearly look identic. I think there must be different appereances, for example : On the Planettype Moon maybe there the cities can be under big domes and the 'streets' between the cities can be tunnels who we can see on the p