It seems to me the most fair and adequate ranking system will be completely independent of team performance, and more about individual performance. Win/Loss will be a factor in this, so the rank will still depend on teamwork, but I think far more points should be awarded for doing well and carrying your team, rather than being punished because you were paired with anchors due to an inefficient matchmaking system that links people with people much worse or better than them to “balance” things.
Maybe I’m crazy for suggesting this, I know a lot of people will probably reply “it’s a team game, the team is all that matters”, etc. But I mean…if half the team can’t even figure out the controls then what are you actually expecting to happen?