The real story behind Champion Grades / Mastery

I get the feeling this could be used down the line to make LP gains/losses slightly more flexible, based not only on a pure game win/loss but also how well you played that match, as a way to lessen the effect of toxic elements such AFKs and intentional feeding.

In the current setup, I could be a fine player that nets solid CS and a 3 or 4:1 KDA average, but, due to toxic elements, I lose many games, and get stuck with a low MMR that is hard to climb out of. With this addition, climbing out of MMRs you shouldn't necessarily be in, could be a little smoother.

I reference this old post and the ideas that happened here: http://forums.na.leagueoflegends.com/board/showthread.php?t=3234668

If this isn't the idea, think about adding it RIOT. ;]