One interesting plot development could be that future Harry has knowledge and skills that shock his younger self and the other characters. For example, he might know advanced spells that haven't been taught yet in the current time. He could also have a different view on certain relationships, like his friendship with Ron and Hermione, which might cause some friction or growth in those relationships. Maybe he has a mission from the future that he has to accomplish while in the past, which could involve changing certain events to prevent a future disaster.
In this fanfiction, perhaps future Harry is summoned by the Goblet because of a time - magic glitch. This could lead to a plot where he has to figure out how to get back to his own time. Along the way, he might encounter Voldemort in a new way, like seeing the early stages of his rise to power more closely. This could give future Harry a chance to try and stop Voldemort's plans earlier. Also, his presence could disrupt the Triwizard Tournament, creating chaos and new challenges for the characters involved.
He might be more confident. Since he's from the future, he has already faced many challenges and grown from them. So, in the fanfiction, he could be more self - assured when dealing with the likes of Snape or Malfoy. For example, he might not be as easily intimidated by Snape's sarcasm.
One possible plotline could be how Harry copes with the unexpected summons. Maybe he has to deal with the distrust of his friends who suspect him of somehow cheating the Goblet. Another could be his training in secret for the tasks, perhaps with the help of an unlikely ally.
Well, perhaps in this fanfic, the Goblet of Fire might summon Harry in a different way than in the original story. Maybe it has a mind of its own and specifically targets Harry for a more dangerous and secretive task that the original Triwizard Tournament didn't include.
The plot could develop in a way that Harry is transported to a different realm or time period. In fanfiction, the Goblet's summoning power could be more than just for a tournament. He could end up in a place where the magic is different, and he has to adapt quickly. He might meet versions of his friends or enemies that are very different from what he knows, and this would greatly influence the story's development.
One interesting plot could be Naruto having to deal with a completely different chakra system in the new world. Maybe the chakra there is more wild and uncontrollable, forcing him to adapt his jutsu usage.
Well, perhaps Harry could face unexpected magical challenges. The Goblet might summon him for a task that is far more dangerous than the Triwizard Tournament in the original story.
Well, he might face some unexpected challenges. In fanfiction, the author could take the plot in all kinds of directions. Maybe he'll be forced into a dangerous tournament that's even more perilous than in the original story. He could encounter new magical creatures or spells that are unique to this fan - created scenario.
One interesting plot twist could be that Harry has an unexpected ally in the Triwizard Tournament. Maybe a Slytherin student who has a hidden agenda but ends up helping Harry in a crucial task. This would change the dynamic of the traditional House rivalries.
One idea could be exploring an alternative version of the Triwizard Tournament. For example, what if the tasks were designed by a dark wizard who had infiltrated the Ministry of Magic? This would add a whole new level of danger and mystery to the story. Another idea could be focusing on a character other than Harry in the tournament. Maybe Neville Longbottom gets chosen by the Goblet of Fire and has to face his own fears and insecurities throughout the tasks. It could show his growth and transformation into a more confident wizard.
One interesting plot idea could be exploring what would happen if a different student was chosen for the Triwizard Tournament. Maybe a shy and overlooked student gets picked, and they have to overcome not only the tournament tasks but also their own insecurities. Another idea could be a love triangle involving characters that were not part of one in the original story. For example, a friendship between a Hufflepuff and a Slytherin turns into a complex relationship when feelings for Harry Potter get involved.