Finally done with the wall of text
Pizza has one point that seems to be above all other: If he dies, and if he is a town, we lose.
Woad&fangs
If there still occurs two killings the following night, then targeting pizza for the next round seems fair. If only a single kill occurs the next night, the chances that pizza is not a mafia, should be pretty high, and good enough to him go off the hook
Anything wrong with this 'theory'?