Riot make it so MMR doesn't lower in cases in losing due to DC/Afk's

Maybe if that person on your team has been afk/dc'd for in total 50% or more of the game, and if you lose, It shouldn't be reflected in your mmr and LP gains/loses. With enough bad luck it can make a noticeable difference in those things and you will have to work even harder than before to climb all thanks to reasons that were out of your control in the first place.