AFK's ruining the Rift

So as we all know AFKs happen in this game and it is something we have to live with. But do we really deserve to lose our LP or MMR for basicslly not having a chance in a game.. I was a Plat 5 jungler on season 4 and now that season 5 is here I was super excited to get through my placements and climb back up the ladder ASAP. I went 5-5 in my promos and was granted gold 5 which I assumed would happen because you never know what your going to get with the system because it isn't in writing for us to understand. Started playing my ranked games to climb back up to Plat.. But then out of my first 5 games I had 3 afks.. Then I went from gaining 25 LP to 15 all because AFKs... Then out of my next 10 games I've had 6 more AFKs... And now I'm getting around 12 LP a win... And prob going to get demoted to silver which honestly might be my best option to reset my MMR. Basicslly what I am saying with this post is, there really needs to be a way to not lose MMR because of AFK I understand it's part of the game but nobody deserves to get screwed with there LP gains or MMR because you have a shitty teammate who died at lvl 2 and rage quits. Or the player who doesn't get the role they want so they afk. My solution to this problem is if you have someone in your after game screen with a red name which means they quit/left the game you lose half your LP you'd normally lose, or lose the normal LP but don't lose MMR. I know Im not the only person getting this happen to them and ruining the game. So please share your opiniins and maybe we can get riot to jump in on this and push for a solution.