I liked AMFP for it's steampunk/Victorian setting. I didn't particularly care so much for the obvious TWIST with the kids and the fact it kept banging on about the "DID YOU KNOW THE SLAUGHTERED PIGS ARE A METAPHOR FOR HUMANS IN AN UNCARING INDUSTRIALIZED WORLD? Because if you didn't, we'll tell you again in 15 min".See I really loved A Machine For Pigs, in part because I assumed spooky things. Like you I knew from the get-go the kids were dead, but I assumed their ghosts were the ones haunting us. Like an established, if unclear, threat.
The new one, Rebirth(Get it? Children and motherhood and some such) is still making this big song and dance with the dead kid being some sort of twist. I'm an additional 2 hours in and its still playing the "Oh you're just not smart enough to understand" shit that I figured out in the first room.
I like metaphors in my games. I can even stomach unsubtle ones(Hello Metal Gear) but despite it's short runtime man did A Machine for Pigs keep reminding you what it's all about in the more overt way possible.