RIOT doesn't understand how to handle AFK and poor player behavior.
REAL LIFE trumps the game. Period. If someone knocks at my door, I'm going afk. Sorry. The fact that riot literally punishes its customers is shit business, period. Wanna know how I know? I'm never paying another cent ever. That's how I know.
The only thing you had to do was add flags, and just put the people with a lot of 'offenses' in the same league.
If you get flagged for cussing you just get grouped with cussers. You go afk a LOT. you get grouped with other afkers. GET IT?
There are LOTS of better games out there, and since I'm being forced to wait for fifteen minutes, I might as well go play something else.
PS. You have HUGE holes in your math that make the game a fucking joke. It's not even funny.
PPS. The first time I played ARAM I never played normal again. How come?