Where is the "Saw" I used to love?

So David Hackl moves to the big chair for Saw V and proceeds to produce a plodding interruption in a series that appeared to be gaining strength; a real disservice. What we got was a warming–over of established plot points (in spades) and incoherent "trials" that did little to build on the respective momentum that the underrated Saw III and Saw IV began — Saw IV, easily the strongest installment since the original so many Halloweens ago. What, I ask, were we to take away from part V in terms of story advancement?

Maybe this is that inevitable episode in a horror series where enough key characters have either been killed off or have simply abandoned the series so that it becomes a different beast on its face. Yes, there are a couple of holdovers mixed among the fresh faces: Jigsaw's apprentice Amanda (Shawnee Smith) and obsessed FBI agent Hoffman (Costas Mandylor) anchor the episode, but these two characters seem to function on a different plane here. They toil in a vacuum of flashbacks and near misses for a majority of the film's 90 minutes, while a band of moral midgets are set to be delivered. Among these fated newcomers is Dexter co-star Julie Benz,  but her staggered contribution and questionable fate makes me wonder why producers insisted on a recognizable actress at all. All for the best, I guess, yet she should be coaxed to return in order to return a semblance of depth and progress to the series. In any event, I cannot imagine the series concludes on this sour of a note.

Saw 5 promotional poster