One idea could be exploring what would happen if a new, mysterious student joined Hogwarts during the Triwizard Tournament. This student could have a hidden agenda related to the Dark Arts and start influencing the events of the tournament in unexpected ways.
Winky the house - elf. She has a lot of potential. In a fanfic, we could explore her life after being freed from the Crouch family. Maybe she has some unique knowledge about the Dark Arts or the Triwizard Tournament that she's been hiding. Her loyalty and her struggle with her new - found freedom could be really interesting to write about.
The main characters are obviously Harry Potter and Daphne Greengrass. Harry is the famous Boy - Who - Lived, known for his courage and his role in the fight against Voldemort. Daphne Greengrass is a Slytherin student at Hogwarts. In the context of GOF fanfic, she often gets involved with Harry in various ways, be it through the events of the Triwizard Tournament or other happenings around Hogwarts during that year.
Perhaps he realizes that the fanfiction is taking him in a direction that doesn't align with his true character. Harry is known for his integrity, and if the fanfiction was making him act out of character, he might give up.
Fred and George Weasley are beloved in fanfiction. In the context of the Goblet of Fire, they could be involved in some wild schemes related to the tournament, like creating their own magical items to help Harry or just causing general chaos and hilarity around the events of the Triwizard Tournament.
One interesting plot could be an alternate version of the Triwizard Tournament where the tasks are even more dangerous and magical creatures from other regions are involved. For example, instead of just a Hungarian Horntail, there could be a whole nest of them to face in the first task.
Well, there are also 'Harry Daphne GOF fanfic' that focus on the social and political aspects of the wizarding world during that time. Daphne might come from a different pure - blood family background. In the fanfic, her family's stance on the events of the Goblet of Fire and how it affects her relationship with Harry can be an interesting angle. For instance, if her family is more neutral, she might be able to see Harry in a more objective light compared to other Slytherins.
It might imply that within the context of a Goblet of Fire - themed fanfiction, Harry Potter reaches a point where he can no longer continue. He could be tired of the events, or perhaps he realizes that the path he was on in the fanfiction was wrong. For example, if the fanfiction had him in a dangerous situation in the Triwizard Tournament that was getting out of hand, he might choose to give up to protect himself or others.
In many of these fanfictions, Norbert's relationship with Hagrid is often explored further. For example, in some, Norbert misses Hagrid deeply after being sent away. Another interesting plot point can be Norbert's impact on the magical environment around Hogwarts. Since he's a dragon, his presence can cause all sorts of magical disruptions.
One great 'Harry Potter Norbert GOF fanfiction' is 'Norbert's New Adventure'. It explores what could have happened to Norbert after he was sent away in 'The Goblet of Fire'. Another interesting one is 'Norbert and the Forbidden Forest', which delves into Norbert's possible interactions within the Forbidden Forest.