Killing more people could possibly help us narrow down *what* cops people are faster, though, is the alternative. It's something I've been going back and forth over, and I'm not sure which to do. (I didn't play this game last time).
That said, we have 3 people reporting a town result, and two people reporting a mafia result. Law of averages says that's one too many town results, unless the plain insane cop actually hit the mafia.