My idea for fixing trolls in ranked queues: a dual-system chat.
I posted this on the LoL subreddit, but was told I should post it here for Riot to see. Not sure if Miscellaneous is the right board... anyways.
Have two separate chats: one for your team, and one for all players in the queue. Your team chat is for team communication, but the 10-player chat is for teams to communicate with the other team if there is someone trolling or refusing to communicate. I would say implement at least a 6(or7)+ person requirement to kick someone out of the queue. The benefit of having the high person requirement is to prevent situations like duo queues from taking advantage of the situation.
I would also say a "pause" button should be implemented in queue in case a team needs to tell the other team that someone is being uncommunicative.