i think the league report system is too easily accesable and people report others whenever they like for whatever they like.
I am a casual league player and i do tent to communicate in the all-chat. I rarely am offensive to anyone and almost never curse. Yet i get reported a lot for verbal abuse, even when i am silent in a game or only positive in the team chat (not all-chat). I have been given a chat ban for 75 games after being offline for a week. I think the report system could use some sort of limit. To make the report less available and avoid players who are having a bad day, or a bad game to simply report everyone for verbal abuse without reason. A reasonable solution would be, in my opinion that you need some sort of proof. For example a screen shot or multiple players who agree to report. Option number two is hard when players queue up with multiple players.