I am sick and tired of getting into a game and having someone int, rage quit, flame, etc. if you care even a little bit about the community, up the punishment and frequency of punishments for players who make this game awful to play. Set the expectation that such behavior is unacceptable.
I love playing League, but every time I get into a solo queue, ranked, ARAM, Draft, Blind whatever it may be; I almost always have at least 1 player on my team that trolls.
You need to reign in players for their toxic behavior in games. I have never been a part of any community where the individual participants were as hateful, demeaning and hostile. The attitude and behavior of players in this game are frankly disgusting.