Clearly what Lucasfilm needs to do is announce a show called Star Wars: Darth Vader and have the show be about a newly christened Vader going to a planet fiercely resisting Imperial occupation using techniques and strategies Anakin Skywalker taught them just six months prior, during the Clone Wars, to resist Separatist occupation. Think Jaynestown from Firefly but played straight, with Vader having to contend with the fact Anakin Skywalker is a hero to these people but he is under orders to crush them. Maybe this is where Vader creates the lie that he killed Anakin Skywalker, because some part of him wants to preserve the hero Anakin was, and this is his first act of defiance against Palpatine - who sent him to this specific planet to torture him and force him to destroy the legacy of Anakin Skywalker.