In this fanfiction scenario, the emotional impact on the characters would be distinct. The other Avengers would feel a different kind of loss with Tony gone. They might be more desperate and angry, leading to harsher decisions in their battles. Peter, being alive, would also have to deal with the guilt of Tony taking his place. This could fuel his character development in a new direction, perhaps making him more reckless or more determined to prove himself worthy of Tony's sacrifice.
Well, one possible change could be that the Avengers' dynamic is severely disrupted. Tony was a key figure in terms of resources and leadership. Without him, the remaining Avengers might struggle more in their fight against Thanos. Peter, on the other hand, being young and full of potential, his presence could have added a different kind of energy to the post - snap world. Maybe there would be more of an emphasis on the younger generation of heroes stepping up earlier.
It could also be that some of Thanos' followers or those who try to take advantage of the post - snap chaos become the main antagonists. For example, some of the rogue elements in the universe might see this as an opportunity to gain power and territory, and they would oppose the Avengers who are trying to restore order. So they could step up as the main threats in the fanfiction.
The 'tony is dusted instead of peter fanfiction' could have a very interesting plot. Since Tony is such a central and resource - rich character, his sudden dusting would be a huge shock. Pepper would be devastated. Peter, on the other hand, would be in a difficult position. He might try to use his own powers and intelligence to figure out a way to bring Tony back. The other Avengers would be looking to him for leadership in some ways, as he was the one closest to Tony among the younger heroes. And the whole dynamic of the post - 'dusted' world would be completely different from what we saw in the movies, with new alliances and strategies being formed in the absence of Tony.
You can try looking on some popular fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfictions, and there's a good chance you might find it there.
In this fanfiction, it could be that Peter snaps after Tony makes a decision that Peter strongly disagrees with. Let's say Tony decides to sacrifice a certain group of people to save the majority in a moral dilemma. Peter, who has a stronger sense of justice for the individual, snaps and decides to go against Tony's plan. He then has to fight not only the external threat but also deal with the rift he has created within the team.
One possible plot development could be that Peter is left with a huge sense of guilt. He might struggle with survivor's guilt, constantly thinking that it should have been him. He could then become overly reckless in his superhero activities, trying to prove that he was worthy of being saved. Another aspect could be how the other Avengers deal with Tony's death. They may turn to Peter as a symbol of hope, since Tony sacrificed himself for Peter. This added pressure on Peter could lead to him either rising to the occasion or crumbling under it.
One possible scenario in such a fanfiction could be that Peter, in a self - sacrificing move, takes on a powerful enemy that was originally meant to target Tony. Maybe Peter's inexperience and pure heart lead him to misjudge the danger, and he ends up giving his life to save others, while Tony is left to grapple with the guilt.
In some 'tony stark was dusted fanfiction', a plotline could involve the other heroes trying to keep Stark's legacy alive. They could be inspired by his past actions and try to create new technology in his honor. For example, Peter Parker might be determined to step up and be the new 'tech - hero' in Tony's absence. Also, there could be a story where Tony's AI, like Jarvis or Friday, plays a crucial role in uncovering a way to reverse the dusting.
Well, in a Naruto changes the past fanfiction, it might change the power balance. Naruto could use his future knowledge to make Konoha stronger earlier. He could teach new jutsus to the younger generation sooner or even prevent some of the big battles from happening. This would lead to a very different ninja world where perhaps there would be more peace and less conflict among the villages.
Well, it could lead to a major shift in the story's direction. Maybe Tony's friends would react differently and it could change the whole plot dynamic.
In the fanfiction world, there could be a prophecy or a pre - determined fate that Tony believes in. He may think that Peter's sacrifice is necessary to fulfill this prophecy and save the world from some greater threat related to the Soyl Stone. He might see it as a selfless act in the long run, even though it seems cruel.