It just came to me how to fix AR URF without having URF's OP Fiesta!
Have it so that each time you get into champ select you can only choose from a random 20% sample of your total champ pool. Additionally before this every player can ban one champ they really don't want to play against just like in normals. Now you don't get to play a champion you absolutely don't want to, but also you don't get to play OP crap each match