Don't know if someone has suggested this before, but it would be really handy if the host is able to kick players out.
It would be incredibly handy as when I was hosting, one player was afk for a very long time so I could not start the game as it requires all players to select a character first.
I can also see it being useful in extreme cases if there were players who would shout abuse into the chat. Although I hopefully doubt that wouldn't happen.