Less is best, leave the knob fiddlers in the cold.
@Albert with user freedom and ingenuity I have overcome tricky material situations, Blood splattered snow was a tricky one.. anyway my point is that you can’t predict what the user wants to make, so the basic building blocks should be as generic as possible. Correct metals, correct topcoat without additive, is great but there are infinite materials that do not fit neatly into any categories.
We need substrates which that have all the controls exposed.
Found it.. Although maybe your layer system would have made this material a lot easier, so could be a bad example.