The destruction of the Goblet of Fire could also cause a rift among the characters. Some might blame Harry completely, while others might try to understand his reasons. This could split the group of friends. Hermione, for example, might be torn between her loyalty to Harry and her belief in following the rules. Ron could be more straightforward in his anger towards Harry. And this internal conflict could be a major part of the fanfiction's plot as they all try to deal with the aftermath of the goblet's destruction.
Well, it might be that the Goblet of Fire has been corrupted in the fanfiction. It could be causing chaos in the Triwizard Tournament, endangering the lives of the students more than it should. Harry, being the hero, takes it upon himself to destroy it to restore order. For example, if it starts spawning dangerous and unfair tasks that are clearly not part of the original tournament's design.
One possible consequence could be that he'd be seen as a rule - breaker on a whole new level. The Goblet of Fire is a very important magical object in the wizarding world. Its destruction might lead to chaos in the Triwizard Tournament. For example, the tasks could become unstructured or the magic binding the tournament together could start to unravel.
Often, it develops through their interactions during the Triwizard Tournament. As they are both champions, they are thrown into situations together. For example, at the Yule Ball, they might have a conversation that gives Harry new insights into Fleur.
Well, their relationship could become more of a rivalry. Instead of being friends, they could compete with each other to solve the mysteries around the Goblet of Fire. Each trying to outwit the other in finding out who put Harry's name in the Goblet.
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.
Their relationship could develop through shared danger. As they face the challenges of the Triwizard Tournament, they rely on each other more and more, which deepens their bond. For example, in the dragon task, Harry might be injured and Hermione uses her magic skills to save him, making them realize how much they mean to each other.
A possible plot is that Harry gets angry at the unfair treatment he receives during the tasks of the Goblet of Fire. For example, in one task, he might notice that the other champions have some advantages that he doesn't. His anger then gives him the motivation to find a way to overcome these unfair situations and still succeed in the tournament. He could use his anger to fuel his creativity and come up with unique solutions to the challenges.
Another way Snape could develop is by forming unexpected alliances during the events of the Goblet of Fire in fanfiction. He might team up with other teachers or even some of the students in a way that forces him to step out of his usual solitary and grouchy self. This new experience of working with others could make him more open - minded and change his overall character for the better. He could learn to trust others more, especially if they all have a common goal related to the strange events happening during the tournament.
Often, these fanfictions develop their relationship through shared experiences during the Triwizard Tournament. For example, when Harry is facing the tasks, Cho could be shown as a source of moral support. They might also develop their relationship through conversations at the Yule Ball. In some fanfictions, they might bond over their love for Quidditch.
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.