it looks like this may actually be a thing… 
Will there be a diversity of resources to gather and mine to attain different looks? ie: varieties of stone and ore, different tree
species, etc.“There will be a variety of resources which provide both cosmetic and
functional differences to your structures. If you look carefully in
the trailer, you’ll see at least 3 distinct different species of
trees. Maybe a wall made of ironwood is better at holding off a pack
of invading goblins than one made of oak.”