Agatha Hackneys was originally set in Wanda's Vision as Wanda's mentor.
After Marvel announced that Catherine Hahn's character name in "Wanda's Vision" was Agnes, fans of the organic intelligence guessed that she might be Agatha Harkness in the comics.
Although Agatha in the comics occasionally does not resemble a decent character, such as supporting the Salem Witch Trial, most of the time her image is still very positive.
In an interview with et online, Jacques Schaefer said that in the early days of Wanda's Visions, they were indeed prepared to make Agnes a mentor to Wanda.
"In the early stages, she was more like a mentor, and then as we went deeper, gradually and reasonably broke the plot, and obviously a suitable villain could better serve the story, so she went in that direction."
"But we didn't lose sight of her potential to be a mentor, teacher, partner and confidant." Those that still run through the various scenes where they are together. ”
Wanda didn't kill Agatha anyway, and it would be easy to get Agatha to return and whitewash her in the future.