One interesting concept could be how the Golden Trio - Harry, Hermione, and Ron - deal with changing the past and the potential consequences. For example, they might try to prevent certain tragedies from the original story, but in doing so, create new and unforeseen problems.
The exploration of different time periods within the wizarding world is also a great concept. They could visit times long before Hogwarts was founded or during significant historical events in the wizarding community, which would give readers a deeper understanding of the magical world's history.
One interesting Golden Trio time travel fanfiction is 'Back to the Beginning'. In this story, Harry, Hermione, and Ron travel back in time to their first year at Hogwarts. It's really cool as they use their future knowledge to change some small things and also prevent some potential disasters. They have to be careful not to disrupt the timeline too much, which adds a lot of suspense to the story.
One interesting plot could be that they go back in time to prevent a major tragedy from happening at Hogwarts. For example, they might stop the basilisk from being released in the Chamber of Secrets before it causes any harm. Another plot could be that they travel back to the time of the founders of Hogwarts and get involved in the early disputes and decision - making of the school. Maybe they accidentally change something that has a huge impact on the present Hogwarts they know.
A lesser - known but great one is 'Time - Twisted Bonds'. In this story, the time travel element is used to create unexpected alliances and conflicts between the Golden Trio and the Black Sisters. It starts off with a bang as the characters are thrust into the different time periods, and the plot unfolds in a very thrilling way.
They might try to change certain events. For example, they could attempt to save Sirius earlier. Maybe they'd use their knowledge of future events to outwit Voldemort's plans more effectively in that time period.
There are often fanfictions that explore different relationships within the golden trio. Maybe a story where Hermione and Ron have a bit of a falling out, and Harry has to play mediator. It delves into their complex friendship dynamics and how they grow from such experiences.
One interesting plot could be that they go back in time to change a small event that has a huge impact on the future of Hogwarts. For example, preventing a certain dark wizard from getting a powerful magical item when they were a student.
Another plotline could be that they go back in time to learn more about the founders of Hogwarts. The Golden Trio might seek out the four founders to understand the true meaning of Hogwarts and its values better. This could lead to them bringing back forgotten spells or ways of magic that were lost over time, which could be used to strengthen Hogwarts against future threats.
Hermione would start by studying all the new things she could find. Ron would follow Harry's lead most of the time. Harry would use his instincts to figure out who to trust in this new future.
There's a fanfiction called 'First Year Redo'. In this story, the Golden Trio goes back to their first year and decides to focus on befriending some characters they didn't get to know well before. They also use their knowledge to prevent some small, but annoying things that happened in their first year from occurring again. It's a heartwarming story that shows how much they've grown since their first year at Hogwarts.
Harry would likely be the brave and impulsive one. He might be the first to jump into action when they face challenges during their time - traveling adventures. His role could also be to use his natural leadership skills to guide the group.