Grades should be a factor determining MMR gains/losses
As we all know, not all of the teammates perform equally, i.e. not all contribute equally to the end result of the game. That being said, those that perform better should be rewarded more for wins, as well as punished less for losses. How do we know how well everyone performed? Grades were introduced quite some time ago, and now that keys aren't awarded by getting S, they are kinda unused (except for lvl6 and 7 mastery). If this came through, most of the people should keep trying when they are losing, and be less complacent when winning on order to retain the highest grade possible to maximise LP. Thoughts?