But... the thing here is that mafia GMs pretty much do their own thing. Add it if you like--to your own games. It might catch on.Then why do we have moderators? To enforce the rules, yes, but also to use their judgement in specific cases. It's not a horrible thing to do. Yes, do that. Why would we even need court cases in real life if everything could be determined by a rule?
The rule could just say "GM can use their own judgement if they believe the players are unnecessarily extending the game" or something similar.
Sunflower: Stealth lynching can happen. Some people just don't pay much attention, and not everyone is lenient. I'm not really going to argue about the game that I'm not in, but.