So Zombies getting to infect someone 1 time per Round, or once every 2 Rounds? Remember, Zombies are against everyone except Zombies.
Anyway I have a rule change:
Pro-Town: Pro-Town Roles will each receive an inherent PM (which NO ONE ELSE is allowed in), and a "Proof PM" where they are allowed to invite anyone, and talk to anyone they please in it.
If that Role is turned into a Zombie the Host will tell them via their inherent Role PM.
Dead-Town: Zombies may add other Zombies to their PMs.
Anti-Town: Mafia can be added to Frankenstein's PM, and Frankenstein to Mafia's PM. NO ONE ELSE.
Mafians will each receive their own PM if they are turned into a Zombie.