Easy Matchmaking Improvement
Match people with similar Number of Ranked Games within same ELO.
I have 550 Ranked Games Played, with a 51% win rate. I get a teammate who has 8 Ranked Games Played and is 1-7 (yes only 8 this whole season). This teammate feeds 5 kills to Jax and then says "I'm done." and then repeatedly tries to surrender as often as the game allows you to and just runs around suiciding.
They have only played 8 games all season, they could care less if they lose or bring the team down, they have no skin in the game. And they succeed, they bring the team down.
If you match people with similar Ranked Game experience levels and have them play against a similar experience level, the Games Will Be Better and More Fun. It is MUCH MORE LIKELY THEY WILL ALSO CARE THE SAME AMOUNT.
Put people who have only played 8 games in 6 months with others that have also only played 8 games this whole season. They also will care about the same amount as each other. Win-Win.