You should be able to give people a passive aggressive medal
Like you can give a medal to somebody that is duo in ranked, and sucks the ever living dick out of their duo - and refuses to give constructive criticism.
Or you give somebody a medal for screaming in all caps the entire game
Or you give somebody a medal for acting like an arrogant fuck the entire game
I would actually pay RP for that instead of the 4 dollar Deviantart buttons that people can mute anyways.
Riot can't say no because they're already promoting toxicity like my suggestion because of the new emotes. So why not take it a step further and add in passive aggressive medals? At least then you can satisfy peoples need to be toxic with this.