Most games have their ranked separated. A game like League of Legends has a Flex Queue for any size stacked team you want with friends but it also has a Solo/DuoQ. The reason I feel like this is a good idea is because not everyone has full teams to play with and would like to just play with one other friend without being dominated by a 5 stack that is clearly going to have better communication than a team of 5 randoms. I think it would help the game grow because then somebody who wants to be in a competitive space could be without feeling at a disadvantage. I really want to play ranked with my friend but I just hear bad things all the time about the 5 stacks.