You should be able to break down dupes. that way you can use those dupes to create the items you need. you cannot drop these items. destroy only. they do not count for drop log because it wasnt "dropped" but this would cut grindtime, make every drop meaningful and it wont hurt the economy.
#Ironman update - duplicate drops.
brisk briar
bitter dirge
no thanks - there are some pieces of content where the drop rates/mechanics are a bit shitty and could do with being revisited, but you don't 'fix' that by fundamentally changing how a game mode works