"Take breaks" -pop-up
I think that there should be a pop-up that informs player that he has played too many games of League of Legends. Like after 3 - 5 games straight something should notice me that "hey, you have played TOO much league for one sitting, could you consider taking a break?"
This would ease players who plays ranked games way too much and prevent them to plunder too deep down with their negative elo. I hope that somebody atleast agrees with me with this idea. This might a thing that might get 20% of negative ppl out of que, because you know that +4 hours staring at your computer without gaming glasses gets you angry and very tense even if you win. Well even if rito does not notice this. I hope you smart players take breaks and climb that ladder or have fun with you mates.
Cheers.
Also, I have a question, how much League you play at one sitting?
I myself now play max 2 games and keep 1 hour cooldown games (like ps2 or 3ds) and then return with my mind cleared and ready to take action.