Report punishment suggestion: reducing lp, ip, and xp gained

imo that would certainly discourage people from doing anything that would get them reported, especially in ranked. in ranked, getting half lp would cripple you, possibly even lead to a demotion should you not be playing really well. same with ip, but not as severe. someone could be trying to rush a champion so they can buy their skin that's coming out of the vault. well, they rage in game or afk, and suddenly they're getting half ip for X amount of time/games and end up missing the skin they wanted. this is just a shot in the dark, but what does everyone else think? would this work relatively well? is it a viable solution? too severe in some cases?