When are we going to get some way of dealing with champion select trolls in a promotion series game?
As the title suggests, it is so incredibly frustrating being at the mercy of someone with zero empathy deciding they want to ruin your series game and having no way to deal with it (barring reporting them after the game, which is hardly a solution). I don't care so much about losing 3 LP from a normal dodge but the potential of being held hostage in a series games is ridiculous. I only had enough time for one crack at my promotion series to platinum the night that the queues were closing and the first game was a complete wash due to end-of-season trolls.
The suggestion of being able to vote-kick people in champion select has been around forever and hasn't really moved forward due to potential abuse cases but something of the sort should really be available if a player on your team is in a series game. An alternative, like having the ability to disband a champion select (provided you are in a set of series games) once for a given series would be such a relief.
EDIT: Some suggestions that have come up from other players:
A means to deal with malicious players in champion select:
1.) The ability to earn "dodges" by playing a set number of ranked games without dodging. This isn't without problems - we know that Riot never wants to encourage leaving games, but we can't be blamed for wanting a legitimate way to be able to leave a series game when we get an allied player who has been going 0/20 all day with {{summoner:10}}

General Champion Select improvements: 1.) Being able to re-queue up with a team that you'd been matched with, in the event that the lobby is dissolved by a dodge.
2.) Reduce randomness in pick order for a player is dodging. An clear abuse case in dodging is doing so in order to get a higher place on the pick order - a player should not be abusing the system to avoid taking their turn at being last pick.
3.) A report button available in champion select. Yes please. This would of course have to be heavily scrutinized. A report shouldn't count against you for something like a rare/unconventional champion pick.
4.) Only match players who are in their series with other players who are in series games. Everyone should go in with something personal on the line. Longer queue times would be worth the guarantee that everyone is in these tense games and (probably in most cases) will try harder as a result.