I know this is likely not a priority right now, but a lot of people find the current system a little confusing or annoying for various reasons.
Why have six separate types of crafting materials? How about we just have two? Scrap and Dust. Making things or upgrading will cost scrap, and re-rolling will cost dust.
While we’re at it . . . why not have dust or scrap drop as loot in maps? Instead of getting as many empty spots, have the possibility of a pile of scrap or bag of dust spawn that players can pick up (and everyone gets some so it won’t be toxic).
Maybe the second idea is too much, but I hope the first idea at least is a good one.