Idea that can fix League of Legents (at least a bit)

I want to give you Riot Games advise, i don't know if you listen to what the people who are playing your game and tell you what to change and improve but i want to tell you some things. First of all i want you to know that i understand that its hard to make something about the feeders in the game and i mean not only the intentional feeders but the unintentional too. I know some people have a bad game but feed is a feed and should be punishable. I have an idea for you: you can make that so when someone is playing on ranked (doesn't matter flex 3v3 flex 5v5 or solo/duo) and gets an S- grade or higher like S and S+ but loses the game, this person will be taken less LP than he should be taken normally if he gets lower grade than S-. I think that it will stimulate players not to surrender and will remove negative attitude in the game because this way players will give their best to get at least S- grade when they see the game is not going well and by doing these they are not only tryharding for grade so they can be taken less LP but are also doing their best to win the game. This way you will make players very happy and this is a big step to fixing your game. Because you know the feeling when you have a good stat you play perfectly and then you lose the game. This feature should help removing this bad feeling or at least decreasing it because in fact you still lose LP. This will help good players climb easier.