I watched this edit and really enjoyed it. The pacing of the book was really not something that translated to the screen. This cut shapes the narrative into something closer to a two part BTAS episode. All in all, a much more concise watch. Of course losing the goofy prologue is a must, but I think this edit somehow manages to salvage what may have been a bad idea in general. There was no need to try to recreate the book frame by frame. The narrative works better with the Joker’s origin opening the story, standing on it’s own gives it some space emotionally.
Only recommendation would be to move the first part of the end credits to the beginning to give the film some titles. Not a necessity though. Good stuff.