Prior to that, other writers had pitched their ideas for the next Saw film to Lionsgate, but none of them had succeeded, while Stolberg and Goldfinger had come up with eight different versions for the film before Rock arrived and merged his idea with that of the duo.
Since Zeke was the only good cop in William's eyes, William decided the rest needed to be killed.
I never once cared about who lived and who died in these traps though, because they always seemed over-the-top in terms of how ridiculous and elaborate they were.
Sometimes we can't let go, and this might result in consequences that end in tragedy.