Remove duo ranking
Every single time I hear "duo" in champ select, I get the feeling of wanting to dodge. It's like a pair of linked baddies or trolls or afk or whatever.
Duo queue is stupid, not only the sense that it's full of noobs, trolls, etc. it brings an unfair match up to those solo queuing because they probably have voice communication. If they are good, it's unfair to the enemy team, if they troll/afk, they most likely will do it together.
Worst part of all is when you have a player that queue his friend into a match that's 10 tiers above him. How many of you have been in match where you're in Silver and one of your teammate is unranked?
Either you solo queue or you queue ranked 5's... rank duo's bring nothing but toxic to both side of the team.