Michael Waldron is being tasked with overhauling the script. Waldron currently serves as showrunner and creator for Loki, the Disney+ series featuring Tom Hiddleston's Asgardians God of Mischief. Prior to that, the scribe worked in the writer's room for Cartoon Network's Rick and Morty.
Waldron takes over for Jac Schaeffer, the showrunner for Disney+'s WandaVision. And prior to that, rising screenwriter Bartlett was attached to the project. Now, it'd appear Marvel Studios has complete freedom to overhaul the script as need be.