I would like to introduce an idea about using the paint tool to create some bump maps textures for our builds:
The concept is using the paint tool and having the possibility to switch to texture or bump mod.
Normal maps would be too complex to paint by ourselves, so preferably using bump maps system, painting in shades of greys over our texture painted model. An Invisible painted information layer to anyone's eyes on a finished build but renderable by client side lights information calculation.
This might greatly improve the appearance of any constructions
And why not doing the same for a reflection map painting mod