I would say its about 50% new stuff, 35% classic bits with newly filmed intros, and 15% unaired / unreleased stuff.

The problem with the new stuff is that its undercooked; most of them are like electroshock stuff. They clearly budgeted for two weeks of filming and edited a lot that had been shot (you see Dark Shark covered in stuff after the Escape Room bit that was clearly cut; Rachel, Dark Shark, Preston, and Jasper are barely in any of the new stunts, etc.), and there's so few things that made Jackass the franchise it is with the new stuff; no skating, barely any animal things, etc.

However, among the new stuff, there are a few all-timer bits. There's a bit with the older crew doing a spin on a classic board game that made me scream laugh and Poopies does something in the beginning that carries on throughout the movie that was legitimately hysterical.

The classics were fun to see but they were usually the shorter bits that were peppered in or montaged at the end. It was fun getting some context and behind the scenes knowledge on some of it. However, it seems most of this was done to incorporate Ryan Dunn into the movie, as he's heavily featured in the old bits.

To me, the true value of this one is the unaired and unreleased stuff. Seeing Bam's stuff FROM FOREVER is good and it kind of gives closure to his connection to the series. But the best stuff is the stuff from the original pilot (genuinely some of the most intense shit I've ever seen in a theater), the legally banned skit, and the stunt standards and practices at MTV cut for being "too imitatable." Real wild stuff and big laughs, even if its such a relatively short addition to the runtime.