I'll admit, I started out on the suspicion route, especially with Mao. He still scares me a little, I'm not gonna lie.
But whether you like someone or not should never be the criteria for choosing to let them die. It's unthinkable, it's unfair, it's plain wrong. People try to justify it with your 'reputation', but it doesn't make them any better. I can't speak for the rest of Monoceros, but I'd never stand to let an innocent party be used as a scapegoat.