They already made it so you have to go into your stats page to see your mmr, also you can't see how much mmr you lost per game on your recent games page. In fact, if you don't go to your recent games, you can't even see your wins/losses. BUT everyone HAS to see the dashboard/front page and right now you can't disable the % under medal. Just thought it should be an option, I was 89% to next medal, told myself one more, then lost 10 games in a row. Wouldn't happen if I couldn't see medal progress.