In badlands, it's all about the roofs.
Its not just the roofs. They are important, but its not everything. I see 4 important parts on the badlands walls:
- The lower part is made so it has a diffirent look
- The middle part is the normal wall you expect. Long parts are broken by giving it a diffirent depth.
- The roof itself on the first layers is the main roof on those with just 1 layer, in some cases the building itself however continues.
- The top roof is the final roof giving just that extra bit of detail to the roof itself. This is what realy gives that extra bit.
Although it looks nice, having too many of these extra layers is going to make the map look boring again. On your 1st screen the left has mainly single layer roofs. on the right side its double layered. On the 2nd screen you only see the double layer, but on the left you still have that little part with just 1 layer.
4 layers is alot of detailing on a single wall, and even though the brushwork is simple it just adds alot. And thats exactly why not to have too many of these. Too much detail is going to distract and will reduce the focus on the best detailed parts.
And even then, a roof doesnt allways have to be a basic roof. In some cases it consists of a minecart bridge. Its still that extra layer that adds a bit. On your 2nd screen on the right you can see such bridge. Layer one is just 1 layer of supports with metal plates, the 2nd layer is the bridge.
The top of the roofs on badlands arent special at all (its just a displacement), its expecialy the sides that matter. Anything building up to the roof level is going to make that roof look more detailed. People normaly dont see the top of the roof, they only see the part just below it.