Unfair Ranked 4v5s Matches

Hello Everyone, Thank you for taking your time to read this post. First off I would like to start by saying I believe it to be unfair that players suffer the loss of LP due to a teammate disconnecting or afking during a ranked match up. Players who disconnect or afk currently lose LP whether their team wins or loses, which I believe to be fair. However what I do not see as fair is that the 4-man team suffers a full loss of LP when they lose, and I believe this should be reduced. I also believe that if a 4 man team wins the game, they should benefit from this hard win slightly more. For example, in the event of a teammate afking or disconnecting, win or lose, the team with the man lost should receive 5 extra lp. I feel this would help people who struggle with the LP climb, and would encourage them during games even if a teammate leaves the game. Of course, this system could be abused so I am open to suggestions, but I don’t think it would be easily abused because winning a 4 v 5 would be difficult for any team. This would discourage them from purposly AFKing in order to benefit a partner. Thoughts?