If it's possible you can use a method of elimination. If someone has very little points (like zero to 5 or something) you could give them a warning and then switch them out for someone waiting as a spectator. Also I noticed that players do not get kicked for idling. So if someone is idling they could be switched out for someone who is spectating.
Just some ideas. Usually I'm stuck abusing the "Join" button as a spectator waiting for a chance to join the game. If this has already been asked and answered then just ignore it. Please and thank you!
