And - though this may sound odd - I'd actually like a stronger connection between Vader and Anakin (not necessary in Ep VII-IX). The point of the prequels (for better or worse) was to change our conception of Vader form a faceless automaton to a character we knew encased in the armor. And (again, for better or worse), now whenever I see Vader, I try to reconcile a mental image of Anakin being behind the mask, saying the words that are coming out of Vader's mouth. (Sometimes I am successful, sometimes not so). But, after they took three prequel films to establish Vader as being a living breathing "person" stuck in there, no good reason to go back to the "faceless man with no history" persona of ANH and ESB. And the bacta scene in Rogue One smacked of that - we saw Anakin "before and during the fall" in Ep I-III and we saw Anakin "old and redeemed" in Ep VI - why not give a glimpse (either visually or through dialogue) of Anakin while he is "trapped within Vader"?