It seems like a very George idea. I’m still skeptical (at best) of it, but thinking on it there’s probably a way to do it that’d be really cool and actually benefit the thematic through line of the trilogy and saga as a whole. If he’s just the big bad reborn again, that’ll be silly. But if he’s more of a specter, if it’s more about the long shadow that he cast and maybe his spirit is playing some role to carry out his legacy, it’d make sense if that’s one of the final sort of challenges that these characters have to overcome.