The Biggest Issue with MMR and how to fix it
The biggest problem with MMR is that survivor and killer aren't just 2 different sides of the same coin, they are 2 entirely different games with different objectives and different mechanics that are only loosely related. To define one side to be “more skilled” or better than the other is impossible.
It would be like a basketball player and baseball player arguing with each other about who is the better player. They're 2 fundamentally different sports, the only thing related is that they both have a ball and running.
Thus, to fix SBMM we need to make win conditions symmetrical in this asymmetrical game. How do you do that? Simple, when you search for a match, should match up with 9 other players. 8 survivors and 2 killers. Then 2 simultaneous but separate matches will take place on 2 different maps that generate with the same seed. The 4 survivors of your team will play against the enemy team's killer, while your team's killer will play against their survivors.
Now despite the gameplay being asymmetrical, the teams are symmetrical, and we can definitively say one team was better than the other (or at least brought stronger stuff in DBD's case) because it's actually comparable.
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