The first 3 Saw films were PERFECT. You can debate the writing, characters, pacing and death scenes all you want...but seriously? I watched all three i own all 3 Saw movies and they have interesting characters, the build-up is worth the tension like horror movies SHOULD be, the blood and gore was something we haven't gotten from mainstream horror in such a long time where blood and gore is needed to disturb the audience and to remind ourselves Horror shouldn't just be about the fun of horror it has to be what terrifies and traumatizes us, that's what makes horror so great and the first 3 Saw movies do that perfectly.
Yes, Saw 3 does make a cop-out when they left that bullshit cliffhanger, and you could look at it that way but
Spoiler...
given how hopeless Jeff was in the end there's no way he would be able to save his own daughter
which makes it feel all the more downbeat and defeated like a horror movie should be to express the truth in horror where not everyone not even your female protagonists get a happy ending. Saw 3 tied up the knots that was an on-going character arch for Amanda and for Jigsaw's final test.
There's the funny thing though, you rewatch the first 3 Saw movies and you'll always remember how horrible the traps are and how disturbing they get, how well-written the stories are where we get a little more insight on Jigsaw's endeavor which made him more of a sympathetic-yet-sinister villain. It leaves us with questions which is grand! more horror movies should do that while they fill us with fright and disturbance! You feel like the first three movies are tied so tightly together they make a great horror trilogy.
Saw 4-7? The only thing they had to go off on was more Jigsaw backstory that didn't need to be ventured into because when it did it takes away the mystery behind the character and just giving itself a George Lucas where it has to be flooded with explanation ruins the character as well as the horror and mystery behind it, the rest of the sequels just spoon-feed the audience and the characters are not even engaging, you don't care about what happens to any of the characters we all just come for the death scenes and the creative traps (which aren't very creative, whether they'd be twisted or disturbingly elegant) and when you take away the engaging plots, the interesting characters and having blood turn pink while taking away some of the atmosphere...all that's left is gore and other stuff.
I have no problem with gore, I love blood and gore, but that can only work if the movie or sequels in question are entertaining, and it's hard to make something like Saw entertaining when it's a series about how shitty people in real life are and asking the morbid questions of what they would do to survive and do they deserve to be alive. Either way, Saw 4-7 lost their story and character elements that made 1-3 so worth watching, add to the fact that the only thing they could go on with is more blood and gore and that would be fine if they were entertainingly dumb but they just become more dumber in the process.
So for this series to get a "reboot"...is a very dumb idea, especially with Saw 7's stupid excuse of a bullshit ending...now there HAS to be a sequel so everything can be all tied up and everyone can die in the end and then it can end the series on a high note if it has any dignity left. It would be horrendously ridiculous if they just up and rebooted it, they did the same thing to Spiderman so who knows.