Actress Elizabeth Olsen is still open to reprising her Scarlet Witch role and returning to Marvel, but only "if there’s a good way to use her."
"So if there’s a good way to use her I’m always happy to come back, however they can make that make sense,” Olsen admitted.
"(...) I just need more, other characters in my life. There’s no longevity in one character.”
I really liked Wandavision. But, in Doctor Strange Multiverse of Madness, they completely reverted her entire redemption arc, so now she's out of the MCU. For no reason... WTF, they couldn't think of another villain to use??
Easy, just show/claim she was in fact controlled or possessed by an evil entity, say like Chthon, not just plain corrupted. Just like Bucky was when he was still the Winter Soldier. Just like that Wanda variant in MoM whom Wanda possessed to defeat the Illuminati back there.