– We’ve removed variability in the amount of MMR you gain or lose from a match. This means that there will no longer be matches that give results like +10/-40.
– Instead of matches giving 25 MMR, solo games will now give 30 MMR and party games will now give 20 MMR. We have more confidence in the impact of a player on the game when they are solo compared to in a party, and thus we are willing to move a player’s MMR faster/slower depending on that.
– We have removed the Fast/Slow queue and replaced it with Ranked Roles and Ranked Classic. To play in Ranked Roles you need to earn Role Queue games by playing matches while selecting all roles–this is unchanged from before. Ranked Classic has replaced the Slow Queue, and it does not let you select roles. We are making this change because the slow/fast queue concept has not been successful in producing good quality games. The end result was slow queue waiting a little bit longer, and then forcing very bad quality matches on the entire player pool. We think it’s a fair requirement to enforce that if you want to have the advantage of playing a specific role, you have to contribute to the matchmaking system by sometimes playing other roles, or just queue role-less as in previous years. Website: LINK