Quick, simple and straight foward:
Offer unranked game rooms that do not influence MMR so I can finally play my battle tech or my CQC Seekerteer without having to worry about being placed in less skilled game rooms.
Plus it should devide up casual players from the tryhards so additionally I can finally relax and stop flaming my team because they don't have a fuzzy bunnyNG idea about what they are doing.
Doesn't even require much resources, just tell the servers to not influence mmr.