Griefing and Rage quitting are running rampant in this game and you need to fix it.
I lose more games to trolls, afk-ers, and griefers than ever before. It's really a big problem. Some of the worst cases, I keep tabs on their summoner name to see if they ever have any gaps in their play time from bans... NOPE. Riot literally doesn't ban these guys. It's absolutely ridiculous. There's a guy I've been checking on for 3 months now and the most he goes without a game is 2 days. So he obviously had no action taken against him.... Come on Riot, this behavior makes the game extremely frustrating and not enjoyable.