It's funny how it really has become the new Saw
. First in that there will be seemingly endless sequels with one out every year at Halloween. Yet also in that the "horror" aspect of it gets all the attention, but it's the story that will drive the fans back.
I always felt with Saw, by the third or fourth one, it was the ongoing plot of the 'bad guys'- Jigsaw, Amanda, Hoffman, and Jill Tuck, and the detectives on their case was a major part in what the fans went for, and not just
to see some more blood & guts.
As opposed to say ongoing sequels to horror franchises like Halloween, Friday the 13th, Hellraiser, Nightmare on Elm Streets, etc, that are basically just the same shtick repeated in every movie, but getting progressively worse with each one.
So with PA, yeah the scares are fun. But it's the whole Katie-Kristy-Hunter-Toby etc story as to why I'm looking forward to PA4