AFK in Ranked Solution

I'll keep this brief. I understand that Loss Prevention is designed to eliminate loss of LP at the cause of any server issues Riot may be having. However, I have an idea that's probably been brought up more than once. Why can't they loss prevent a losing team when one of their players is still level 1 at the end of the game, it's obvious they were not connected and did not contribute to the team effort at all. Give the winning team LP, but don't take mine away because of an uncontrollable factor. Just my take on a system that is not highly utilized from my experience of playing off and on for 3 or so years, I just don't see a downside to what I have suggested and I think it would be a benefit to everyone playing this game, whether it be ARAMs or Ranked games. That's the end of my suggestion and my run on sentences. I just want to give my input on what could possibly make the game better and less frustrating, nothing like a 6game win streak down the pipes for an afk.