we really need a way to vet out team comps that are just unfun to play against.
hearthstone has a system for arena, their comparable random mode. cards are chosen in buckets, and the cards are determined to have equal value. something similar could be brought into ARAM, where both sides get equal teams based on the gallons and gallons of stats available to riot, which are unused.
i see top-tier aram champs consistently. it is frankly uninteresting and it wanes my interest in the game and gamemode overall when I get put into a team comp which i can do nothing with.