I'm not the best at reading raws, so, what exactly do you mean by "looks like created by another player"?
When you create your dwarf fort, it looks in world as hillock. You can create your 'hillock' in any land biome. And you can tame any trainable pets that go to your fort, even good unicorns or evil beak dogs. You can harvest and then farm both underground and aboveground crops, in good or evil surroundings too, and fell all trees. You can conquer other civs sites. You can rename you fortress. You can torture creatures by tricks and buildings. Your dwarves may create artifact from dwarf or corpse. Your adventurer may butcher any body, even sapient. So I change site type, biomes, pets, plants, sites conquering, add more symbols, change ethics. Currently I think about adding more dwarf-usable weapons due to ability to buy them or claim trophies and adding slade to embark/trade due to exploit.
