Gore has it's place in horror films. Personally, I feel like it's best used sparingly and to maximum effect, but there's something to be said for the "gore fest" film types (e.g. Dead Alive), I suppose. Still, after a certain point, things stop being about horror and veer closer to torture erotica. Nothing against torture erotica either (again, not my thing, but to each their own), but it's not horror. The violence orgy scene was literal torture porn, and I think it serves the film best as brief flashes, just enough to make it clear what's going on, but not enough to function as an actual torture porn clip.