Item idea - a unique that disables champion packs :D

Don't you say "ugh" in your head after you see a champion pack? To my best understanding of Mr Llama's and Pavke's content (which might be totally off btw), each champion counts towards the total unique cap of the area. So every time you see a champion pack with 4 champions, it means you lose 3 regular unique packs in that area.

Wouldn't it be cool if you could sacrifice an item slot for some niche item that essentially increases the monster density by removing champion packs?