They figured out how to incorporate Mysterio into the franchise, as the young hero mourned the death of Iron Man, and decided on the end of Spider-Man: Far From Home. In any of the scenes where we had all the villains together, Peter is going to come in and he is going to learn some things, and then Doctor Strange is going to show up and he is going to explain what he is doing. Sommers and McKenna needed to make sure that the rest weren't just watching Peter and Doctor Strange argue, but also the interdimensional bad guys, since it's their fates they're discussing. The hardest part of the film to crack was the dialogue between Peter and Doctor Strange, according to Sommers.
During a recent appearance on The Q&A with Jeff Goldsmith, the writing duo open up about the challenges of working on Spider-Man: No Way Home's screenplay. It led to the heroes fighting and the sorcerer being trapped in the mirror, making him unavailable for most of the narrative. This was the beginning of the events of Spider-Man: No Way Home. Despite its issues, it's still a satisfying finale for Holland's trilogy, especially with regard to what it was able to accomplish in terms of bringing back Andrew Garfield and Tobey Maguire. It would be difficult to justify Peter's insistence on going through all the trouble to save Doc Ock if the scene didn't work.
Peter Parker's first solo-outing in the MCU was set up by McKenna and Sommers. The conversation between Peter and Doctor Strange is one example of how it sets up its interdimensional narrative. The most ambitious Spider-Man movie thus far was written recently. The scene that was the most difficult to write was the Spider-Man: No Way Home scene. They were tasked with a bigger mission when Sony wanted Holland's third film to tie together all three eras of live-action Spider-Man films. Director Jon Watts has also been involved in Tom Holland's trilogy. Peter decided to disobey his friend and elder.
I mean, some scenes just have a lot of heavy lifting, right? It was difficult for the writers to work on this scene.
There isn't a flawless film in Spider-Man: No Way Home. It wasn't easy, but they pulled it off.