Riot does punish, but its not enough (here's an idea)
Riot really should have an entire vid series dedicated to player conduct giving both good and bad examples of how to behave in game.
We have kids to adults in this game, and kids are more likely to emulate the bad behavior over the good, especially if there's absence of a meaningful swift punishment system. The punishment system exists; but its failing to take enough negative players off the rift and its failing to deter new offenders. A message that may or may not appear telling you gj on getting someone punished doesn't even remotely begin to satisfy in comparison to hours and game after game ruined.
I propose a video series that shows all kinds of examples of trolling and passive-aggressive throwing. Update with a new report category and put trolling/ passive-aggressive throwing into that category. Put a specific group dedicated to investigating this report category and lets continue to kick shit that ruins the game out.
I love this game, but the whole time I've been apart of it there's been this ongoing battle for the soul of the community and the positive, pleasant players are losing out.
Give these kids and adults a clear, easy, champion spotlight-esque series focused on what and what not to do towards other players. End the debate amongst players of what should and should not be considered "bullshit behavior". Set a fkn standard and hammer it down in iron or this game will eventually go the way of Dark Souls: full of assholes and unless you got the skill to beat everyone a shit experience of a video game.