I was under the impression that specular highlights were performed on all meshes with normal maps. Does this not apply to your wigs ?
In theory yes, but if you take a closer look at a player's hair, and compare it to an equippable wig, the hair version has a shine to it that the wig does not, despite the two using identical textures. Unless I'm mistaken, this is the doing of the hair shader.
Dunno but I've seen robes (world) meshes having hinge constrains in them.
Could you please give a link to where you saw this? I would love to take a look at it.
...Or, wait, you mean ground art. No, I'm talking about the equipped mesh.