I like the idea to have different resistances result from the type of material used to craft your armor. (This reminds me much of some game, where this concept more or less replaces character progression entirely.) But I have the feeling that this is a bit difficult by design, as there is a chain of intermediate items that would all need those different varieties each. Considering "varieties" as such, a buddy told me that the ideas and drafts of the skunkworks project go a bit beyond the crafting of one single type of a light armor set. It seems just very much reasonable to test and implement this part before adding more leather content, also given that complementary core features are still missing.