Did you port this setup or does it need balancing? It seems really powerful for mafia unless there's at least two free mason pairs. It doesn't specify in the rules does mafia KP ever go up?
Roleblocking mafia KP seems really swingy - if the roleblocker finds one and notes that kills stopped (obviously), they don't even necessarily want to point the scum finger at that target. Stifling the KP indefinitely seems immensely powerful while trying to find the other scum/godfather.
Just my first thoughts off the top of my head.