“A young Jedi named Darth Vader, he was a pupil of mine before he turned to evil, helped the empire hunt down and destroy the Jedi Knights. He betrayed and murdered your father.”
The only story necessary for the prequels to tell is the story of a jedi knight who turns to the dark side and betrays the Jedi, then proceeds to kill a ton of them, Luke should be seen by the audience as some random Jedi’s son, and that’s it. There’s no reason to give Luke and Vader the same last name, and there’s no real reason to see Vader’s children being born. When the twist finally comes in ESB, the audience should be 5 movies in and still be in as much disbelief as Luke is, the prequels really could serve the twist rather than take it away. Man, what a shame these movies are.