Possible change to Champion Mastery

what if you only gained mastery points if you achieved a rating of S- , S, or S + ? However, the same amount of mastery points would be required to hit rank 5. Also, points awarded when you lose a game would be reduced, but if you still managed to achieve an S- or higher, you'd get decent points towards your mastery rating. (we all have had those games where you do well but simply can't win due to afk's or trolls or just heavily feeding side lanes). You would still get some points for A, but very little. And anything below A would give you almost no points.

I think achieving many S's would go further to someone really getting skilled with a particular champion, and, since it would take so much longer to hit rank 4 or 5, the icon would mean more, and it would feel like more of an achievement. As it stands now, it just feels like a grind where anyone can hit rank 5 mastery regardless of actual proficiency with a champion.

Lastly, I think this could have a potential (if small) side effect of reducing toxicity. If you can still get decent mastery points for achieving an S- or higher, even if you lose, players interested in ranking up wouldn't throw in the towel so early. Some players would still try their best even in what seems like a lost game.