Exclusive Pillager Raid Banner Items

I think there should be exclusive items which you can only find by picking up the banners you get from the raid captains. the more you pick up the higher chance you have for a unique version of the raid banner exclusive item and if you get all 6 then you are guaranteed to get a unique, this would add a better reward for doing the challenges and make people want to pick up the banners, maybe they don't have to be new all exclusive items but they could be raid banner exclusive uniques of already existing items, obviously I would prefer the former but if would require less time to only make new uniques, in summary: Picking up the Pillager Raid Banner would give items which you can only get with picking up the banners and completing the challenge, if you get all 6 banners you are guaranteed to get a unique.