I think this situation has to change if you want to decrease "toxicity"
In ranked match
Anivia goes around throwing walls at teammates to get them killed "Sorry guys, I'm just not that good with this champ"
random teammate "Dude, stop trolling"
anivia /all "please report X. so toxic cant even play"
"you have been chat banned for 48 games"
and
walls are passable by allies? they're like the only 2 things that have major potentially to kill teammates in this game...
's not really since you can decide to ult away.
That way people can't troll without feeding which is detectable by the system.
Riot clearly has the tech, since they coded that gate thing at base