Summary
Concept art from Spider-Man: No Way Home reveals a comic-accurate costume that Doctor Octopus almost had in the film, resembling his yellow-and-green design.
The film's decision to maintain Doctor Octopus' original design instead of changing it is a logical choice, as it helps retain the character's resemblance to his original appearance in previous films. Instead of introducing a completely new costume, the movie creatively incorporates Peter's Stark Tech to give Doctor Octopus a slightly different look and highlight the power of his equipment.
New concept art for Spider-Man: No Way Home continues to be released, with the latest showcasing an alternate version of Doctor Octopus's comic-accurate costume. The film not only brought together different versions of Peter Parker but also featured iconic villains from their respective universes. Though called the Sinister Five, fans were treated to Doctor Octopus, Green Goblin, Sandman, Electro, and The Lizard teaming up before returning to their own worlds.
The Spider-Man: No Way Home concept, as illustrated above, showcases Doctor Octopus in an alternate attire that closely mirrors his appearance in the comics, adorned with a yellow-and-green color combination. Upon closer inspection, his costume prominently incorporates his distinctive logo, serving as a clever reference to Spider-Man 2 and its fusion reactor.
Why No Way Home Was Right To Change Its Doctor Octopus Design
Although this design could have ultimately provided fans with a Doctor Octopus costume resembling the comics, it is understandable why Spider-Man: No Way Home chose not to go down that path. Primarily, the film aimed at evoking nostalgia through the return of these characters, and introducing a completely new outfit for Doctor Octopus would have introduced one too many distractions. Considering the story's context, Otto had just arrived in this universe and lacked the means to create a new suit while he focused on finding a way back home.
That being said, Spider-Man: No Way Home cleverly gave Doctor Octopus a fresh appearance by incorporating Peter's technology. The scene where Doctor Octopus' mechanical arms assimilated parts of Peter's nano-suit effectively showcased the power of Otto's equipment. This choice made more sense for Doctor Octopus's character development within the broader narrative of Spider-Man: No Way Home, rather than simply providing him with a costume that aligns with the comics.
As for what lies ahead for Peter in the Marvel Cinematic Universe after Spider-Man: No Way Home, that remains unknown. While Spider-Man 4, featuring Holland, is currently in production, the ongoing WGA and SAG-AFTRA strikes will likely prolong the wait for Peter's return to the MCU. Hopefully, whatever comes next for Peter following Spider-Man: No Way Home will be worth the anticipation, especially considering he is embarking on a new chapter after concluding his initial trilogy.
Source: Spider-Man: No Way Home - The Art of The Movie (via @SpiderMan3News)