Unless someone is a bigot or makes threats of harm, Riot should stay out of it. It's a heated and emotional game filled with immature kids/18+mentally childish idiots. Also, if someone is so toxic, either give them the ability to permanently keep chat shut off or just remove their ability to use chat. Most times, good people get harassed by a bunch of un-parented punks and they get the "hockey-Retaliation Penalty" We all know Riot in most cases does not review what was actually said and we all know that there are a ton of immature players that will report anyone for anything and even make things up. Just last night, we had a obnoxious troll who actually lied post game and told everyone post game that I was calling him a racist term when I most certainly did not, thankfully a couple of team mates stood up for me and said I wasn't the problem and I was polite and played a great game; 2-3 of the other team still reported me or so they said....... LOL overall community Mentality at it's finest..
My point, it's an emotional game played by a ton of immature, un-parented children ages 10-40+, Things are gonna happen and despite Riot's behavior modification attempts things are still rampant; Give the community the ability to Police ourselves with tools like mute,block,ignore, turn chat off completely from loader settings etc and the ONLY time Riots should be stepping in is when a serious infraction takes place such as Bigotry and Threats of bodily harm or harm in anyway such as hacking or swatting.
Finally, while playing the game in a positive way is it's own reward, people in many cases spend their money on this game, people put a lot of time into this game, and unless your account is banned for something actually worth banning someone for and not something silly like foolish in game chat, they should be able to collect the rewards everyone else does Period.
Also- I Totally call BS on Riot's claim that less than 5% of the community is toxic. I think we all know that is a blatant lie...