oh so you didn't want to win?

Hey Riot and members of this awesome game. So this post goes over the topic when you play a game and a player decides to leave, Rage quit, sucky internet so on, you get the memo. All i was wondering is, is anything being done or have you considered creating something which could allow for other players to join game. We have all tried that people leave a game and your chances of winning are now worse than ever. I was just wondering is anything being done? or is this an impossible wish? making happy people out there rescue a team on the edge of losing. Could a player join this afk player's champion and play the best he could?