I been saying this for years. But somehow people are dumb enough to believe it makes more sense to reward the same amount of LP to the guy who goes 12/2/14 and the guy who goes 2/12/0 for the win. Literally its like people have no common sense. How is that fair. Real question.
bottom line: If you carry you deserve to be rewarded with more LP for your performance. If you feed/troll/afk you deserve lower LP for your performance. This is not hard to understand people. It is common sense!
This should be applied directly to winning and losing. If you win and you carry you should get more LP. If you carry and lose you should lose less LP. We have this system where they rate you after the game. Yet there is no real point to the system because you still win/lose the same amount of LP whether you feed or carry.