Mastery Ranking and Ranked game mode.
I've been playing league of legends for the past two or three years and an avid fan, I think I speak for plenty of us when we hate to see someone who doesn't know what they're doing on a champion, or base line game play, in a Ranked game, then proceed to lose said game because of it. I propose that we use the Mastery system as a form of matchmaking in the future and instead of unlocking Ranked mode at level 30, we should have to earn rank five Mastery on at least five separate champions to use ranked mode and ONLY be able to use said rank five champions, thus, you know what you're doing, your team knows you know what you're doing and no one has the argument of "Are you sure you know what you're doing?". Thoughts? Opinions?