Riot please make the game fair

its not fair at all to let those carries lose as much as same lp as feeders and trollers. I hope riot start having a thought from calculation of score of the match (S+ to D-) and develop into a system decide how many losing/winning lp u got at the end of the match.

The system might not be mature enough to kick off now, but i do think it is a good start to improve overall players quality and a solution of trollers/feeders.