Idea that could potentially sweep swathes of toxicity away.
What if after a game where you receive 4 or more reports, you are made to wait one hour until playing again. not a one hour queue mind you, just one hour where you can't play league. It shouldn't account for an actual punishment either, if such a thing is needed, but rather it would act as an immediate recompense for the actions of an individual that would likely help them understand a few things. being able to look back at one game immediately after, and think about it, could help people that have merely lost their way, and needing to wait an hour before playing another match would probably help players that are merely tilting to take a second to breath after the game.
of course there are issues that this idea has in of itself, like how abusable it would become, but It would likely improve the overall player experience by making toxic players immediately face some punishment for their actions.