Is it just some simulation that only she and Vision can perceive, or if not, can other people remember the previous reality like Kathryn Hahn’s character seems to when she notices Vision is somehow still alive in the trailer?
While we can likely expect the show to resolve that, I would not as confidently count on a definitive answer to my next question, as it relates to a character whose position in the MCU is a little too “past-tense.”
I cannot imagine that WandaVision is going to treat Scarlet Witch like a villain as House of M essentially does in certain ways, but the events of the comic do raise question about all who are affected by her reality alteration in the series and how.