i use to be on the tribunal... i had a 99% accuracy rate and one of the top members on it...
my point to my question though... is that if this effects every one through out rank then by the end of the season it will balanced out and im willing to bet it has less of an impact on your rank/tier/elo then people think.
i would be willing to say the afk,troll, feeder is about 8-12% of games so lets say an average of 10%
if you play 300 games in a season thats 30 games... so you have a chance to win 270 that arent effected by this 10 %
if you win those 270 games at 56% in your rank your over all win rate would be (including the 10% of afk/trolls etc ) would be 52%
and if you are better then your tier or division you should win about 58-64% of games to climb so if you win 60% of the 270 games thats 162 wins out of 300 for a win rate of 54% which if you dont have streaks of losses and win on a constant basis you climb til you dont..
people seem to think rank is here to prove your worth and that is what riots wants you to believe...
however rank is to put players of similar skill levels vs each other... to keep you playing and becoming addicted to the game therefore buying champs/skins merch watch their pro scene for ad $ and so on... the longer you stay and play the more they make.
so if they put bronze players vs diamond players the bronze players lose get stomped find the game unfun and frustrating and quit...
the diamond players get bored cuz there is no challenge
so they make it where you can strive to be better and get "rewards " for doing so but if you lost to much you become and have the game be challenging so you constantly strive to be better therefore play longer.
http://imgur.com/t6ELSzA