We need loss prevention for afks

I swear I keep seeing afks and getting remakes. I had 1 remake today, I just had a loss from a guy who went afk. This is both in RANKED, not a normals but ranked where people are actually trying to climb. The game acknowledges the fact the person was afk with the X over their icon in the end game screen. If it can recognize that, why can't it prevent a loss from occurring? Have it set to X amount of time if someone afks, and to prevent abuse, make that person lose the amount of lp they would have lost or make that even higher to further deter abuse. Its not fun dealing a loss you can't do anything about. Now be free and discuss, if you can argue for the side of why it shouldn't be a thing by all means go ahead. I don't want me and other people getting demoted or losing promos because of this absurd bullshit.