TheMCUintroduced the most powerful Iron Man suit of armor after Tony Stark’s death, and that could be a bad omen for the upcomingVision Questseries. Vision made a game-changing debut inAvengers: Age of Ultron, where he claimed the title of “Strongest Avenger” as he acquired Ultron’s ultimate body and a combination of Ultron and JARVIS' consciousness. Since then,Vision’s MCU appearanceshave depicted him as a much less powerful hero, and the original Vision died an apparently definitive death inAvengers: Infinity War.
Wanda Maximoff recreated Vision’s consciousness inWandaVision, and this magical Vision seemed to transfer his memories to his old body before Wanda disintegrated her hex. Therefore, the original Vision may return with his original memories inthe MCU’s upcomingVision Questshow. However, Vision may never be the same again. In fact,What If…?season 3 might have suggested that White Vision won’t be as sentient as his original self when he comes back inVision Quest.

White Vision’s What If…? Return Essentially Made Him A Plot Device
Mysterio Controlled White Vision And Riri Williams Transformed Him Into A Suit Of Armor
InWhat If…?season 3 episode 5, Mysterio takes advantage of Tiamut’s catastrophic Emergence on Earth to create his own empire, using Iron Man’s technology to enforce his conquest. In this timeline, White Vision is Mysterio’s mindless servant until Riri Williams fabricates a tool that breaks his body apart. Then,Riri transforms White Vision into a suit of armor, which she uses to defeat Mysterio.What If…?season 3 episode 5’s White Visionis the most powerful MCU armor introduced so far, but he’s nothing more than a weapon employed by the main villain and the main hero.
How SWORD dismantled Vision’s nearly indestructible body in the MCU’s main timeline is still unknown

WandaVisionestablished White Vision as a reconstructed synthezoid body with no consciousness of its own. White Vision simply followed SWORD’s rules like a machine, and not even Wanda’s chaos magic could restore his old personality. It was only until Westview’s false Vision transferred information into White Vision’s mind inWandaVision’s final battlethat White Vision chose to escape Westview. While White Vision could slowly transform back into his old self,Vision Questcould easily follow inWhat If…?’s footsteps and turn him into a living weapon.
Vision’s MCU History Makes It Hard To Imagine Him As The Sole Star Of His Own Series
Vision Has Never Led Any MCU Movie Or Show
Despite his great power and unique personality,Vision has never been a main star in any MCU movie or show. Vision played a key role in Ultron’s defeat inAvengers: Age of Ultron, but he only joined the fight halfway through the movie. Vision had a very restrained role inCaptain America: Civil War, where he abstained from aggravating the Avengers' conflict and from using his powers to harm any of his colleagues. Vision spent most ofAvengers: Infinity War’s runtime badly injured, and he spent most ofWandaVisionbeing psychologically manipulated by Wanda Maximoff.
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The MCU’s Vision has always been a supporting character, or a co-star at most. The Multiverse Saga has given solo projects to previously overlooked MCU characters. For example, Scarlett Johansson’s Natasha Romanoff starred inBlack Widow, Samuel L. Jackson’s Nick Fury starred inSecret Invasion, and Tom Hiddleston’s Loki starred inLokiseason 1 and season 2. WhileVision Questis finally giving Vision his lead role, the fact that White Vision was created with no personality could pose a problem for the synthezoid. On the other hand, this flaw could be at the center of White Vision’s search for purpose.

Vision’s MCU History May Foreshadow What His Solo Show Will Really Be Like
Vision May Co-Star With Other Marvel Characters In Vision Quest
Vision Questwill center around White Vision, undeniably, but Paul Bettany’s character could share the lead role with one or more characters.Hawkeyeis Jeremy Renner’s first installment as a lead character, but Renner’s Clint Barton shared the lead role with Hailee Steinfeld’s Kate Bishop.The MarvelsisCaptain Marvel’s direct sequel, but Brie Larson’s Carol Danvers shared the screen with two other heroes, Teyona Parris' Monica Rambeau and Iman Vellani’s Kamala Khan. Likewise,Vision Questcould follow White Vision alongside heroes like Joe Locke’s Wiccan and other MCU heroes.
Considering that Billy and Tommy Maximoff reincarnated inAgatha All Along,Vision Questcould adapt part ofAvengers: The Children’s Crusade

Vision’s transformation into White Vision by a shady organization is the main plot of Marvel Comics’Vision Queststoryline. So, while the MCU’sVision Questcould adapt some elements from its source material, the fact thatWandaVisionalready adapted most of the originalVisionQuestsuggests that Marvel will draw inspiration from elsewhere. Considering that Billy and Tommy Maximoff reincarnated inAgatha All Along,Vision Questcould adapt part ofAvengers: The Children’s Crusadeand tell a story where White Vision reunites with his kids to search for Wanda Maximoff.