You established him as completely unstoppable with seemingly infinite power that was apparent available to every pony all this time. What's a power base even necessary for?

I'm not sure it can really get darker. At this stage it would just be adding variety or quantity to the evil deeds.

Good world-building in terms of asshole grandma, the aristocratic bloodline stuff, and Haftling's increasingly developed slave mentality to her 'god.'

Love the stasis thing, but in a sense that I can't wait to see it be used for even more depraved stuff. Not sure if I should suggest things for it or not.

This story disgusts you and you see it as beneath you, but you can't stop yourself from being a good writer, and no matter how crap you think it is, you can't stop this from being a well-executed death-and-pornfic.

I'd definitely like to see it continued, though as I've mentioned, I'm far more of a fan of the sexual violence than the violence violence.

It's weird; this story's triggers are things that I normally try to avoid... yet I've read through everything so far, probably because it's not super graphically written (yet, at least). Whatever the reason, keep it up!