End Game Grading.
So, if you've ever looked at your 27 kda, 33/4/28 zed mids and ended the game with an A+, as pretty much everyone has experienced, you've probably gonged yourself in the forehead with disappointment.
Riot's reasoning is grading is based off of champion. For example, I've gone 27-0-18 on tryndamere jg and only got an A+. I think that kind of game should account for an S, however, because most tryndamere jgs post stats like that, its only normal, so you are an A ranking. (Beyond the balancing aspect of those numbers), I think grading shouldn't be champion based, it should be performance in the game based. If I have a 50 kda on any champ, obviously I hard solo carried that game, and should be rewarded with my mastery tokens. Doesnt matter the role/champ.
If one role requires an 80 kda to get an S riot, including good cs/gold/objs/ward scores. How about you balance the champ, until then, give me my S tokens!