I noticed an interesting retroactive parallel between Return of the Jedi and Attack of the Clones

Attack of the Clones:
Padme: “You’re not all powerful.”
Anakin: “Well I should be! I will be the most powerful Jedi ever! I promise you… I will even learn to stop people from dying!”

Return of the Jedi:
Anakin: “Luke, help me take this mask off.”
Luke: “But you’ll die.”
Anakin: “Nothing can stop that now.”

I thought it was kinda neat how they retroactively created an arc where Anakin learns to accept mortality and death.

Then I realized, what if they had added another layer to Anakin’s turn to the dark side based on that line? Anakin is not only afraid of the deaths of those he cares about, but his own?

What if one of Anakin’s biggest fears is not only the mortality of the ones he cares about but that of his own? He craves power because he seeks immortality for himself, as well. When he learns the Sith crave and work towards immortality and the dark side may be a way to achieve it, it adds another layer to his turn. And in addition, makes his line finally accepting that nothing can stop his death even more meaningful.

It adds a dramatic irony, too. Obi-Wan is able to achieve immortality by the time of A New Hope and boasts to Vader that he’s more powerful then he can possibly imagine because of it. Vader turned to the dark side partially to achieve immortality but Obi-Wan achieves it by staying on the light with practically no effort. Then when Vader finally becomes Anakin again, ditches the dark side, accepts the light, accepts his mortality, and lets go of his selfishness, then is when he’s finally able to achieve immortality. But only after he learned not to want it and stop wishing to control the natural cycle of life. Accepting that death is “The way of the things. The way of the Force,” as Yoda would put it.