Since a Traitor might help you, to avoid making it obvious they are a Traitor, is it better to wait to reveal them? The advantage of accusing early, is that if no White Swords are on the board, you don't get a Black Sword if you make a false accusation. You also prevent Special Cards being played by the Traitor (if they decide to reveal themselves) that can hurt everyone.
Does the strategy of when to Accuse change with the number of players? Why?