>>533902656
>stacks get paired with stacks
No they don't. Solo players are consistently used to fill in missing spots because it speeds of queue times and some spots cannot be filled with stacks (like a 5 stack).
Stacks also completely mess with match quality because
>in individual matches you can have a silver, bronze and gm in a stack, which averages out their ranking scores and means the match won't be between 6v6 equally skilled players, which then also means if a bad silver player picks hela or torch on your team but a gm picks torch on the other team that's a huge difference
>it means worse players will get carried in stacks to higher ranks where they don't belong, which even when these bad players stacks they will lower match quality with mismatched skill rankings
Stacking in ranked is the biggest cause of imbalanced matches. Meaning so long as stacks are unrestricted in ranked, ranked matchmaking will never be good and balanced.