I’m more or less fine with the one Hal shared by Nev. The only thing I’d change is having her and Anakin created through the dark side. I’d simply replace that phrasing with “the Force itself” to make it more ambiguous just how much of a part he played in it.

I don’t think the Rey Horcrux idea would fit well into that specific draft. I think that needs to be it’s own thing. I’ve said this recently, and I’ll share it again, but I really think we need two different versions here:

Rey has been powerful since birth for a reason, her power was simply dormant (I’d prefer not to retcon her parents being bad, either, but whatever)
Rey had some sort of vague destiny with the Force that results in her getting supercharged with power despite her being nothing initially

Again, I don’t think the second one makes sense in canon. The only way I can explain it is using the dreaded M word so here we go. If Rey were born with few midichlorians like everyone else, that means she only has as many receptors to it for super basic stuff. She can’t get more of these because it’s a biological thing, not a spiritual thing. So even if she were “chosen” by the Force for a certain destiny, she cannot possibly hope to attain the level of power on par with a Skywalker which we see her have. Her having a Palpatine horcrux in her is like… a fan-fictiony way to give her that power boost. Because, as I said, she needs something biological, not spiritual. And besides, I’m sure she will still be extremely powerful in the upcoming Rey movie, assumably after Palpatine’s influence has gone away. I think that’s the biggest problem with this idea is that if we rely on it to explain any sort of power in Rey, that will instantly get nullified by her upcoming movie. It also doesn’t allow us to get away with still calling her a Palpatine and getting involved with things that are “stronger than blood”.

Maybe I’m just crazy and the second option I listed is something that appeals to people on here. Probably because nobody on here likes the midichlorians anyways. But I’m not super interested in making something that doesn’t feel like it could have come out in December 2019. I can guarantee something like this wouldn’t have come out because it retcons our understanding of the Force from Episode 1 in order to not retcon the “spirit” of Episode 8.