In such fanfiction, a plot point could be Harry's relationship with Snape. Since he knows Snape's story from his own time, he might try to change their relationship for the better. Maybe he could help Snape deal with his feelings for Lily in a more positive way. Also, Harry's experience with dark magic threats in his time could make him more proactive in dealing with the early signs of Voldemort's rise in the Marauders era.
Another plot could revolve around the love interests of the Marauders. For instance, James Potter's pursuit of Lily Evans. You could show their early interactions, the misunderstandings, and how their relationship gradually developed. It could also include how his friends supported or sometimes complicated his efforts to win her over.
A great plot idea could be Harry getting involved in the Marauders' pranks but also using his experiences to guide them towards more responsible magic use. He could also be a key figure in uniting different groups in the wizarding world during that time. Since he has a different perspective, he might be able to bridge the gap between pure - bloods, half - bloods, and Muggle - borns much earlier, which could have a huge impact on the future and the fight against Voldemort.
The main characters are Harry Potter for sure. He's the one who is reborn into the Marauders era. Then there are his parents, James and Lily. They are important as Harry gets to know them in a whole new way. The Marauders are also central. Sirius, with his wild and loyal nature, Remus with his werewolf secret, and Peter, who later betrays them in the original story. Their relationships with Harry add a lot of depth to the story.
I really like 'The Marauders' by an unknown author. It focuses on their adventures and how they formed their tight - knit group. It has some really exciting plot twists, like how they dealt with certain dark magic threats in their school days. It's a fun read that keeps you on the edge of your seat.
One interesting aspect is the new dynamics in relationships. For example, if a male character is made female, their interactions with other characters, especially of the opposite gender in the original, change completely. It gives a whole new angle to the friendships and romances.
One interesting plot point could be Itachi's unique ninja skills being applied in the wizarding world. For example, his Sharingan might give him an edge in certain magical duels or in detecting hidden magic. Another point could be his interaction with the existing Harry Potter characters. His calm and calculating nature might contrast with the more impulsive Gryffindors, leading to some interesting character dynamics.
Well, perhaps Merlin's reborn identity as Harry Potter means he has an innate understanding of certain things. He could be able to see through Voldemort's plans more easily because he has seen similar dark wizards in his past life. Also, his relationships with the other characters like Hermione and Ron would be different. He might be a mentor - like figure to them, guiding them with his centuries - old wisdom.
Well, perhaps Loki, reborn as Harry Potter, would use his knowledge of other realms to bring in new magical concepts. For example, he might introduce Asgardian rune magic to the Hogwarts curriculum, which could cause a stir among the professors and students alike. He could also use his wits to outsmart Voldemort in ways that Harry might not have originally thought of, like tricking him into believing false prophecies.
Well, one interesting plot point could be how the main character, reborn as a Black, might use their knowledge of the future to change the fate of the Black family in the wizarding world. Maybe they could prevent some of the dark deeds that the family is known for in the original Harry Potter series.
In this fanfiction, an exciting plot point might be Tony Stark's reaction to the magic he discovers as Harry Potter. He's used to technology, so magic would be both fascinating and frustrating for him. He might try to reverse - engineer magic, which could lead to all sorts of interesting situations. Also, his Stark - like confidence and bravado could put him at odds with some of the more traditional wizarding families. His attempts to modernize Hogwarts, like bringing in new forms of communication or security systems using his knowledge from his previous life, would be a major plot point that could change the whole Hogwarts experience.