The other day I was running with that real asshole of a tank who wanted to blow through the instance speed running the whole thing.
I told him several times to stop doing that, that he was killing the fun for all of us. He went all "I don't care" on me.

So, I decided he needed a run back to cool off his head. Maybe by backtracking the instance he'd have time to calm down a bit.
IF there was a kick function, he'd strong-arm the DPS to vote to kick me, threatening to leave the dungeon. So, no, thanks. I like my leverage.