Also, I’m doing this for my Vader edition of ROTS, I thought I’d share here.
I’m implementing the idea of Anakin turning because he craves immortality without having him have a vision of dying on Mustafar. That doesn’t really do much other then make Darth Vader into a self-preserving victim, the opposite of my intent.
Instead, I’d accomplish this by moving the opera scene before he has a nightmare (my version is also gonna have the political subplot moved before the nightmare). The dialogue would be edited and new voice lines would be done so that instead of “saving people from dying” it’s referred to as “cheating death”. This shows that Anakin is intrigued by the prospect even before he knows of Padme’s impending doom. The nightmare about Padme is moved forward all the way after Obi-Wan leaves Utapau (which thematically makes sense: for all Anakin knows, Grievous could kill Obi-Wan; now he’s faced with the prospect of losing another loved one).
It’d also be modified that Palpatine doesn’t even know about Anakin’s nightmare. Padme is never mentioned in any of his scenes with Palpatine. Though new dialogue with a Palpatine voice actor (I was gonna resort to AI, but I’ve just been offered help by someone who knows Palpatine voice actors), Palps offer isn’t to save Padme, but that they’ll figure out the secret to immortality together and Anakin will be second in-command of the Empire.
It makes far more sense for Anakin to believe Palpatine here. Instead of framing it as, “Palpatine is offering Anakin the power to save Padme”, it’s “Palpatine is offering Anakin to become his apprentice so they can learn to cheat death together and basically be immortal Force gods that rule the galaxy forever”. Anakin knows that the Sith’s ultimate goal is immortality, and that the dark side is the only potential path to it, as the light side is all about respecting the natural course of life. Palpatine craves that power as much as he does, and Anakin also has reason to believe Palpatine would actually make this offer to him, even for purely selfish reasons. Palpatine wants an all-powerful immortal being to enforce his Empire. Originally, Anakin would have no reason to believe Palpatine would actually have any investment in saving Padme and isn’t just lying. The Sith, a group of selfish egomaniacs would not have a power dedicated to saving others. Anakin figures if he can figure out the power to cheat death for himself, he can do it for Padme too, but the idea here is that Palpatine doesn’t pitch that. He’s not gonna pretend he, a selfish Sith lord, cares about Padme. Anakin should see through that lie, he’s encountered several Sith, and Palpatine should know he would see through that lie.
It also makes it so Palpatine has a solid plan, instead of just getting lucky that Anakin happened to have a nightmare about Padme, he simply preys upon a desire that Anakin has had since he was a powerless slave.
If we’re comparing to Michael Corleone’s arc in The Godfather, the nightmare functions less like the assassination attempt on Vito and more like Apollonia’s death. The final straw rather then the spark.