Disconnecting vs leaving

So sometimes you are playing a game and either a storm is going on or whatever you get disconnected from your wifi there for disconnecting you from the game. Other times whether it be someone stole your penta or you just raged you can exit the game manually. I think that if it is a ranked game if you disconnect from the wifi and from your game when it is not your fault you should not lose as much lp as leaving the game manually. When you disconnect both ways it says " A summoner has disconnected " So if you are able to make a incredible game I think you have the brains to make a system to not lose as much lp if you dont have control over being disconnected.