One interesting plotline could be the Avengers having to deal with alternate versions of themselves that are brought into their universe during the events of No Way Home. It could lead to some really cool team - up and fight scenes.
In some fanfics, there could be a plotline where the Avengers discover a hidden consequence of No Way Home. For example, it could be that the spell that went wrong has also weakened the barriers between different dimensions in ways they didn't expect. So they have to embark on a quest to find a way to strengthen these barriers again. This might involve them traveling to different dimensions, meeting strange new beings, and learning new forms of magic or science to solve the problem.
Tony could be critical if the fanfic doesn't match his view of technology in the MCU. He might say, 'This fanfic writer needs to study up on Stark Industries' tech a bit more.' Steve, on the other hand, would look for the moral and heroic elements in the story. He'd appreciate any parts that show the Avengers working together selflessly. Thor would love any parts that involve his hammer or his Asgardian heritage. He'd laugh heartily at any humorous takes on his character in the fanfic. Natasha would be looking for strong female character portrayals and any strategic elements in the plot. Clint would be glad if his character has some cool stunts or a key role in the story. And Bruce would be intrigued by how the fanfic deals with the duality of his character, whether it's in a new and interesting way or not.
One interesting aspect could be how different Avengers react to the multiverse concept in 'No Way Home'. For example, Tony Stark might be intrigued by the technology behind it and start theorizing about improving his own suits. Another could be Thor being a bit confused but also excited about seeing different versions of the characters. And Captain America might be more focused on the moral implications of the multiverse and how it affects the fabric of reality.
Well, in some 'Avengers adopt Peter fanfic', a great plotline is when the Avengers discover Peter's identity and decide to take him in. They start to teach him things like how to better control his powers. There could be a plot where Peter has a falling out with one of the Avengers, like Thor perhaps, over a misunderstanding about how to use his powers in a certain situation. Then they have to work through it and become closer as a family.
Some fanfics might focus on the villains' perspectives. In 'no way home', the villains had their own stories. In the fanfic, it could expand on what they were thinking and feeling during their time in the new universe. It could show their internal struggles more, like how they coped with being in a different world and having to face a different Spider - Man.
One interesting plot twist could be that Peter Parker's identity as Spider - Man is revealed to the public in a much more dangerous way than in the movie. Maybe a villain uses some mind - control device on someone close to Peter and forces them to expose him at a really bad time, like during a big public event where all the Avengers are present.
A really interesting fanfiction could be where the Avengers view the events of 'No Way Home' from a different dimension. They see Peter's struggles and decide to intervene in a more creative way. Maybe they use their connections across the multiverse to find a solution that doesn't involve as much danger for Peter. Some fanfictions also explore the emotional reactions of the Avengers to seeing Peter go through so much in this movie.
Tony Stark could also be a key figure in some fanfics, even though he's no longer alive in the main MCU timeline. His intellect and previous experiences with multiversal - related events (like in Endgame) could be explored in the fanfic. Maybe the Avengers find a way to access his knowledge or even a version of him from another universe to help them out.
One popular plotline is Spiderman joining the Avengers and having to prove himself to the more established heroes. It often involves him showing off his unique skills and growing as a hero within the team.
One interesting plotline could be a civilian who is caught in the middle of a battle and is saved by the Avengers in a very unexpected way, like being teleported to safety by Doctor Strange at the last second.
One interesting plotline could be Wolverine having to team up with the Avengers to stop a powerful mutant - created virus that threatens to wipe out both mutants and non - mutants alike. He brings his unique combat skills and healing factor to the table, while the Avengers contribute their various superpowers and high - tech resources.