A very important plot point is the journey to switch back. They usually have to figure out what caused the body switch in the first place. It could be a magical artifact or some kind of scientific experiment gone wrong. Along the way, they might learn more about each other, their insecurities, and their strengths, which makes for a really engaging and character - developing story.
Another plot point is the reactions of those around them. The Avengers or their friends might notice something strange. In some fanfictions, Pepper might be really confused by 'Tony' acting like a teenager, and Ned might be shocked by 'Peter' suddenly being so much older and more confident. It adds a lot of comedic and dramatic elements.
One popular one is 'Body Swap Chaos' where Peter and Tony wake up in each other's bodies and have to figure out how to handle their daily lives and superhero duties. It's full of humorous moments as they struggle with the differences in their physical abilities and knowledge.
I think Iron Man and Hulk would be a really interesting pair. Just imagine Tony Stark's brilliant mind trapped in the Hulk's huge, rage - filled body. He would be constantly trying to find a way to control the Hulk's strength and not go on a rampage. And Hulk in Tony's body would be so confused by all the technology and might accidentally set off some of Stark's weapons.
A cool plot for this fanfiction could be that all the Avengers switch bodies randomly. This would lead to total chaos. For example, Dr. Strange in Iron Man's body might use magic in ways Tony never thought of, messing up his suit's technology. Meanwhile, Iron Man in Dr. Strange's body might try to use the Cloak of Levitation like it's a jetpack. They would have to figure out how to reverse the situation while also dealing with any threats that come their way.
One interesting plot twist could be that while in each other's bodies, they have to deal with the opposite gender's social expectations at Hogwarts. For example, Hermione in Fred's body might struggle with the more laid - back attitude towards studies in Gryffindor among the boys. Another could be that they accidentally use magic in a way that reveals their situation to a few select characters, like Ron, who then has to help them keep it a secret. And a third plot twist might be that they start to understand each other's personalities and insecurities better through this strange experience, which changes their relationship for the better in the long run.
One idea could be that Harry, in James' body, has to deal with the Marauders' era challenges like handling Snape's enmity in a different way. He could use his knowledge of the future to prevent some of the bad blood between them. Another plot could be James, in Harry's body, trying to figure out modern Hogwarts and the new threats like Voldemort's return. He might be shocked by how much the wizarding world has changed yet still use his old - fashioned courage to face the new problems.
A possible plot development is that this body switch could be part of an enemy's jutsu. As they are in each other's bodies, they start to understand each other on a deeper level. They might discover new ways to combine their skills, like Ino using Naruto's chakra control in her own unique way and Naruto using Ino's mind - related techniques more effectively. This newfound understanding could then help them defeat the enemy who caused the body switch in the first place.
One interesting plot development could be the confusion it causes among their friends. Harry, in Hermione's body, might struggle with her academic routines and the way she approaches studies. Meanwhile, Hermione in Harry's body has to deal with the pressure of being the 'Chosen One' and facing Voldemort. For example, when Harry tries to answer questions in class as Hermione, he might not be as quick or accurate, leading to some humorous moments. Also, Hermione in Harry's body could use her intelligence to come up with new strategies against the Dark Lord that Harry might not have thought of before.
In many 'Tony Adopts Peter Parker' fanfictions, a common key plot point is the initial meeting. It might be at a science fair where Peter shows off his amazing intellect and catches Tony's eye. Then, Tony realizes Peter's difficult family situation, perhaps with the loss of his uncle. This leads to Tony deciding to adopt him. Another important part is Peter adjusting to his new life, like getting used to living in a high - tech environment and having access to Tony's resources for his studies and superhero activities.
One possible plot twist could be Natasha taking on Tony's role as the tech - savvy billionaire. She might use her combat skills and spy training in a new way to handle Stark Industries. For example, she could turn the company's focus more towards creating defensive technologies for the world's most vulnerable areas. Another twist could be Tony in Natasha's role. He'd have to rely more on his wits and physical abilities rather than his high - tech gadgets. He might struggle at first but then find new ways to outsmart his enemies using his intelligence in a more hands - on way.
One interesting plot point could be the reactions of their friends. Harry's friends might be really confused seeing him with Draco's tie, and Draco's cronies might be equally shocked. It could lead to some humorous exchanges as they try to figure out what's going on.