I'm catching up on traitors at the moment, but I've realised that the "bottom 3", ie the 3 that the traitors are picking between murdering, are always last in to breakfast?
So surely the faithfuls could keep track on who's last in every day, to allow them to tick off other faithfuls? I know they do it to build suspense for us so we don't know immediately who the traitors have killed, but if you're in there, can't you just keep a note of the last 2 in, tick them off, and then the ones not ticked at the end are traitors?