Several years ago, I had the idea of repurposing the footage of Rey’s mother (Miramir) as her Jedi master and cutting out the footage of her father (Dathan) entirely for a Rey nobody edit that still connected her to the Skywalker family.

Rey’s backstory would then go on to be somewhat like this:
Rey was a force-sensitive child who was sold by her parents for drinking money (As stated in The Last Jedi). However, that person turned out to be Miramir; Luke’s Jedi apprentice. Over time, Rey learned the ways of the Jedi but they were also targeted by Sith cultists. In order to protect Rey from them; Miramir leaves her on Jakku while she tries to contact the rest of the Jedi but she’s killed before doing so when Rey accidentally blows up her ship with force lightning. The trauma of doing so is heavily repressed by Rey; who vaguely remembers Miramir and mistakes her as the mother who abandoned her on Jakku. It would also be the loss of his first apprentice what made Luke the paranoid man that was tempted to kill his own nephew in order to protect the rest of his friends.

This was mostly feasible with the footage that we had (Though it would need some editing for the force lighning destroying the ship); but the main problem would be the dialogue (Namely; the reveal at the hangar and Luke’s encounter with Rey on Ach-To during Episode IX).

Nowadays, however, creating dialogue with AI voices is feasible for a task like this (Though now the challenge would be making the lips match or writing good dialogue to begin with lol).