Yep, and Leia’s son being evil by default becomes a natural outcome of this concept, so much so that it’s surprising to Snoke that he is being drawn back to the light.
I think this could definitely be the optimal solution to this Rey Palpatine problem, especially since it brings everything full circle. If Kylo told Rey that Palpatine’s attempts to achieve immortality led to Anakin’s birth, then Palpatine’s return would probably be signified by another such birth…hence Rey.