It’s not too surprising, then, to learn that Monica originally played a much larger role in the WandaVision finale.
She nearly kills herself to help Wanda and Vision and then … basically becomes a passive observer in the final battle?
While trying to steal the Darkhold, they would have squared off with Agatha’s familiar, Senor Scratchy, who would have undergone “an American Werewolf in London transmutation” into a demon creature.
That would have precipitated a “Goonies set-piece styled chase” for all the characters.