Marvel Comics fans had been eagerly anticipating the official transformation of Wanda Maximoff into the Scarlet Witch since her debut in Avengers: Age of Ultron. Right from the beginning, the MCU implemented several strong alterations to the character. Scarlet Witch's transition from villain to hero was fast, but WandaVision readied fans for her true villain arc. Doctor Strange in the Multiverse of Madness opened the door to the multiverse for the MCU, and fans were eager to see mutants join the fray -- especially since Wanda is a mutant in the comics, and the X-Men rights had just been acquired from Fox.
Source：https://www.cbr.com/doctor-strange-multiverse-of-madness-xmen-last-stand-mistake/
