BOTTOM LINE: Riot doesn't do enough to ensure positive play.
I just got out of a game where the ADC openly talked about being a Smurf and how we had to loose this particular game because this account needed to stay in B5. We flamed him a bit and threatened to report him and this guy offers to boost us on his main account, which is also cheating btw. I mean this guy was literally running from teamfights, ruining into their base typing free kill over and over again. He was so bad that our mid laner went afk for a while, but eventually came back. We ended up muting the ADC and trying to win, which we almost did. But his cheating and trolling unfortunately prevailed.
There are too many stories like mine in the leauge community and frankly I don't think Riot is doing enough about it. I understand that being a free to play game literally opens the floodgates to all sorts of people, but it's no secret that Leauge has one of the most toxic player bases out there.
My question is: When is Riot going to do anything about it?
Take a few notes from blizzard and their Moba. Ban accounts. delete accounts. IF they're smurfs they aren't buying anything on those accounts anyway. I know it wont solve every case of toxic behavior but at least make the trolls have to work to ruin the gsme for 4 other people. I love leauge. And when you get paired with good players it's amazing. But being put ona good team is starting to feel more like winning the lottery than the sunrising. (You cant count on it)
Bottom line, Riot needs to do more to ensure positive play.