Stop awarding ELO in ranked rooms. When a player artificially chooses his opponents, he artificially creates BS ELO.

Only award ELO in matchmaking.

Make matchmaking random among a pool of mods that are actually competitive.

Only match people within sensible ELO difference.

Make seasons longer than a month.

Make an end of season tournament with the top 10 ranked players with a real prize.

Make all matchmaking award ELO in BO5, not individual games

Ban anyone under brown belt from competing

This is one it like 3 things I agree with Fist on