ranked solo queue leavers
There should be loss forgiven (+0 LP) for team with leaver / afk player. The leaver / afk player should be punished with some number of required normal games (10 sounds good) before playing ranked again. It doesn't matter if someone disconnects or is just a jerk. The same punishment should apply if the client has detected an afk player or if enough afk / trolling reports are received. Ranked should be a privilege for people who play through games, not the default game mode. There is inadequate punishment for AFK's and leavers currently.
Additionally tying in champion mastery as a prerequisite for ranked games would also be a good idea. I'm tired of losing ranked games because some top teemo with 2 games as teemo went 1-12.