Whether you credit the tight-knit, unchanging crew or the writers for their diabolically, intricately woven continuity and mythology, Parts I to VI (fuck VII) end up feeling more like one big movie than a series of disparate installments; especially if you marathon them every Halloween. This is the USP of "Saw," and it enables an exposition-heavy effort like "V" to feel as perfunctory as it does necessary.
There are 3 narratives going at once, a backstory, a gauntlet with new victims, and Hoffman's manouvering of things. In previous SAW movies, and what has made the franchise successful i think is its connectivity. Unfortunately with this film and SAW 3D there is none, the gauntlet people are unrelated to the larger overarcing plot (unless u listen to the commentary). Worth seeing to get to SAW 6 though.
The absolute nadir of the "Saw" franchise. It's painfully obvious that this is just weak connective tissue between the major storyline that ended with "Saw IV" and whatever was coming next with "Saw VI" onward. Utterly pointless, with only two moments that have any impact on the following films, this should have been a 15-minute short, or the first 15 minutes of a more interesting film.