Players Who Don't Take Ranked Games Seriously...
Players who don't take ranked seriously are ruining the game for me and others like myself who play consistently and aim to win or prevent the other team from winning for as best as possible.
However, my wins are continues followed by being matched with players who are first timing champs in RANKED games or trolling because they didn't get their preferred role. This is unacceptable in a competitive setting.
I recommend that higher standards and expectations be placed on Ranked. If a player is on a losing streak, they shouldn't be matched with players on win streaks. Period. The losing player is either unskilled, trolling, on tilt, unfocused from playing too many games, or at the very least isn't skilled enough for Ranked play.
I strongly think that Riot needs to re-evaluate their Ranking System to better gauge players and their skill.
as your 6th item, or sell it for your 6th.