Dodging champ select
I think many of us can agree where you are sometimes in a champ select and there is a troll in the team that you have to dodge. Otherwise it would be a waste of 20 minutes, I for example just now dodged a game because we had a trolling jungler who called the role last but still locked it in as nunu to be able to steal every camp. I did not want to waste 20 minutes on this so I dodged. Because I dodged I got a time penalty, which is completely normal. However I don't think it's a very fair system. I dodged so that me and the rest of my team would have a normal game instead of having one with a troll. I feel like I should not be punished for it with a 5 minute penalty. During the 5 minute wait I came up with the idea of giving players the option to vote for a dodge if there is a troll. I think that 4/5 players should should vote yes in order to be able to dodge.
There are some issues with this system though, non meta picks would maybe be seen as troll and always be dodged. An issue to overcome this is maybe to only give one "free" dodge per day. The other dodges would be like normal.
But besides this I see no way to abuse this. In gamemodes like ARAM this option should be disabled since it would allow for dodging because of a bad team comp which would make the que times way longer.