The kick option worked for WoW, it didn't seem to deteriorate the experience for new players. I am concerned with trolling without fear of any kind of punishment. There is a lot of control as a player entering a dungeon whom cant get kicked, especially if that dungeon is one like Ifrit, Garuda, or Titan where players cannot join after the instance has started. Re-queuing is an option but a very bad one if you are DPS.