If THIS becomes the rule, then the ratio of town to mafia will be 3:infinity.
"Town is an unorganized community" - initially. Its task is to organize, understand who can be trusted and who cannot.
If you don't believe me, read the rules of real-life Mafia games on Wikipedia: http://ru.wikipedia.org/wiki/Мафия_(игра)
Confessing and truthfully lying is another aspect of the game...
Personally, I don't really enjoy playing a purely psychological Mafia game (this is my subjective opinion). If someone likes it, then go ahead and create a topic... :)
But if we leave the clues, then your suggestion is :smile18:.