Punish those doing well, handicap those doing poorly.
League of legends is the only game i know that punishes those doing well, and handicaps doing poorly. The Bounty system is a perfect example of this, no reward for doing better, but if you kill it you get a gold bonus. Point and click cc is another example of this. A 0-30 warwick can get a ult on a 50-0 carry, and shut it down completely. Most games, you get bonuses for doing better, leading to higher rewards. Think of Killlstreaks in FPS's, in alot of mmo's you get a buff for getting more pvp kills.
I just dont want to be babysat anymore riot. I want to do well, and not have a 5 man focus for the 450 gold bonus. I want to trash talk the enemy team without fear of getting reported by a sensitive individual. This game is rage inducing mostly because of the restrictions you put on us. Of course champion balance is a big factor as well.
CS:GO has no chat filter, allowing the players to decide who they want to hear and who they dont.. LoL does too, but the mute button is just for looks, as its easier to report someone for saying something mean than it is to mute them and miss out on the drama.
***EDIT: To be clear, im not saying "Killyourself get cancer" should be okay, thats taking it way too far and should be reportable. but if you outplay your opponents and say "HA GOT YOU" you shouldnt be reported for "unsportsmanlike, hate speech". Even in Major sports leagues they talk trash, if you do well, you boast. I know ill get downvoted to hell again, but the white knights of this forum are the same people reporting players for saying "GET WRECKED" after they get 1v 5 aced by a great play from insert champ here
/end vent.