Less LP loss when playing with trolls
TLDR at the bottom but please read all of it if you wish to criticise my suggestion. It isn't even that long! :P
I'm certain that I am not the only one to feel that it is unfair to be punished for other players' actions or lack thereof. I have not been playing in Ranked for a few months but have recently started again as I have more free time. Within the 3 days I revisited Ranked queue, I have had 4 or 5 games out of around 13 with AFKs on my team and in my most recent game, my bot-lane fed until the enemy MF was 7/1 and then they both left the game. My top lane was 4/1 in my favour and mid was winning his lane too. Why should we be punished?
This is a suggestion for Solo/Duo queue that is open to criticism. The team that has the AFK and will have subsequently lost the game because of this should lose significantly less LP than a normal loss (excluding the AFK). Of course this would be modified for those in a Duo who will both lose the normal amount of LP should one of them AFK so that one doesn't just leave a losing game so that the other gets a lower LP loss. Furthermore, the LP loss should be further reduced if a player has done relatively well based on KDA like a 6/2/1 or 1/3/9 should only lose 4 LP and a 0/5/1 should lose around 13 LP. This gives less incentive for an entirely losing team to discuss over who could take the fall for the team and leave for the rest to have reduced LP loss.
I believe that this will make the game healthier in terms of player experience as people will be less tilted over a loss due to an AFK especially if the game was still winnable if the AFK could just tank some damage for the team or provide some CC however minimal.
TLDR: Reduced LP loss for the rest of the team experiencing an AFK. For Duos, both lose normal amount if one leaves. Amount of reduction of LP loss depends on how well you did as well.