My headcanon for the Nobody cut is that Rey was the Force’s answer to Palpatine/the Sith cheating death. This goes in line with the idea from TLJ that the Force seeks to balance itself, and it explains her latent powers that “awaken” in TFA. It’s a decent explanation to how overly gifted she seems to be with the Force, while mantaining the core of TLJ’s big reveal, she still comes from nothing, from nowhere, much like Anakin. This also adds an extra layer to her relationship with Kylo, he’s Anakin’s heir through blood, while Rey is Anakin’s heir through the Force, it makes sense that a powerful Force bond would form between the two, and them coming together to fulfill the prophecy once again and end the Sith for good feels like an aproppiate ending to a trilogy that was all about history repeating itself. Her carrying on the Skywalker name at the end also has a new meaning since she’s actually heir to that lineage, from a certain point of view.