by etholon
Whenever me and my friends play with 5 or 6 fire fighters we do a variant where we randomize everyones role and the only way to switch is to get caught in fire.When a player is caught in fire his role card gets added to the unused ones and then someone shuffles those and picks a new card at random. That player then starts at the fire truck as a new fire fighter because the previous one "died".
We don't allow deliberate "deaths", you have to play the role you are dealt as good as you can.