Idea of Reducing Negative Behavior
For the people who earned A or higher should not lose any LP. This will significantly reduce negative behavior. Like intentional feeding, afk and toxicity, etc... If other people's bad performance do not effect you, then you should have no reason and you will not be mad and doing negative stuff at all. Most of time people have such negative behavior its because they get tilted by the teammates or from the last bad game. The reason why they have gotten so toxic is because the lost of LP even they were trying so hard to carry the team and to lead to the victory. We should award them, not to punish them. Once you guys adjust the system to make the ranked system more fair to the hard working players, the community will not be toxic like this anymore.
Here's an example If you lose your game but you earned:
S+ +10LP S +10LP S- +5LP A+ +0 A- +0 A +0
Original Idea was from another player. https://boards.na.leagueoflegends.com/en/c/player-behavior-moderation/t9feBp4h-loosing-ip-when-people-afk-or-feed