So, what do we have now?
We should transform this into a real vote and compile. Each one is having their advantages and inconveniences really. They are all cool though.
1- Modern City
2- Arab City
3- Dwarven City
4- Underwater City
5- Sky City
6- Cliffs City
1- Modern look, lots of glass, smooth stone, wool, modern shapes, clean streets that mostly form squares. No wierd stuff, can haz skyscrapers, underground malls, etc. I think this theme could be achieve with a mild effort.
2- Arabian Nights / Prince of Persia style. Lots of sand stone, no huge and tall buildings outside palace-types buildings. Mostly square-ish buildings. Streets can go haywire. Would need a vast desert biome. I think this theme could be achieved with minimal effort.
3- Undergrounds, probably no tall or crazy buildings. Sorta medieval look. Streets can go haywire. Buildings could also be carved into the grotto walls. We would need to TNT a freaking huge cave, losing a bit of the natural look. I think this could be done with mild effort.
4- Underwater, would probably look modern. I feel the looks would be pretty open here and this is basically a sci-fi setting. Crazy stuff could happen. Downside is that building underwater is long and hard. We would also need some huge sea or dig a hole and fill it with water (wich is almost harder than just building underwater). I think this could be done with a good effort from everybody.
5- City on floating islands, multiple islands linked by bridges. This is another fictive theme so the creativity and buildings could go crazy. Could be ala Bioshock too, where every building / island is an airship. Buildings wouldn't be much tall though, probably something like 2-3 floors. Could look epic, downside is having to create the islands. I think this could be done with an average effort.
6- A city carved in cliffs/mountains. Roads would also be carved or bridges would link the houses. The look could be pretty open, we would mostly design the facade of our building and carve the rest. Could look "Ewok-ish" or sorta Cappadoccia. Would need a nice cliff set (there's one behind Booty Bay mind you). I think this could be done with minimal effort.