Ranked LP Loss

So tell me why I lose LP in a ranked match because some jackass leaves the game after he picks a hero and the game loads? So I, and my team, get collectively screwed both in an unwinnable game and in our LP because of NO FAULT OF OUR OWN? I don't care who you are, a bronze 5 or Faker, no one can win a damn 4v5 from the start, the entire deck is stacked against you. Good job Rito, you've failed on one major part of your gaming platform. How have you not come up with a way to detect something like this? If you can OBVIOUSLY tell when someone has gone AFK and actually has been the entire game, then there's no reason why you should spare their teammates from being punished for their bad behaviour. Fix this. Please.