Another possible plotline is the relationship between Harry and the goblin community. How do they accept him as one of their own? There could be some goblins who are against the idea of adopting a human, and Harry has to prove himself worthy. This could lead to a lot of internal conflict within the goblin society as well as Harry's own personal growth.
One interesting plotline could be a goblin uprising in the wizarding world. They might feel oppressed by wizard laws and decide to fight for more rights. Another could be a goblin - Harry Potter alliance. Maybe Harry discovers that the goblins have a secret that can help him defeat Voldemort and they team up. Or perhaps a story where a goblin character befriends Harry and shows him a whole new side of the wizarding economy that is controlled by the goblins.
In some fanfictions, the goblins could assist Harry in learning about his family's true history and the secrets they left behind. This might involve them taking him to secret places within Gringotts that are not known to most wizards. The goblins' skills in deciphering ancient runes and their understanding of the magical economy could play a big role in this. For example, they could reveal that there are certain magical items that his family had stored away for a time of great need, and these items could give Harry an edge in his battles.
Well, perhaps there's a plotline where the goblins reveal long - held secrets to Harry because of his trust. These secrets could be about the origins of certain magical artifacts or the true history of Hogwarts. And this knowledge could then be used by Harry to fight against the dark forces in a different way than in the original series.
One interesting plotline could be how the characters deal with the complex nature of goblin debt. For example, Harry might find himself in a situation where he has to repay a debt to the goblins in a unique way, perhaps by using his magical skills in a task that benefits the goblin community. This could lead to a series of adventures and new relationships with goblin characters.
In certain fanfics, the goblins might be helpful in saving the wizarding world from a new threat. Maybe there's a new dark force emerging, and the goblins, with their unique magic and knowledge of the magical realm, work together with the wizards to defeat it. They could use their underground network and resources to gather information and strategize against the enemy.
One interesting plotline could be how Harry adjusts to the Malfoy family's pure - blood traditions while still holding onto his own values. For example, he might struggle with the Malfoys' views on Muggle - borns. Another could be his relationship with Draco Malfoy. Instead of being rivals, they could become brothers in a sense, and their dynamic would change completely, leading to new adventures at Hogwarts together.
One interesting plotline could be that Harry is adopted by a powerful wizard family outside of the wizarding world. They introduce him to different magical cultures and techniques that are not common in Hogwarts. This gives Harry a whole new perspective on magic and makes him even more powerful in the long run.
One interesting plotline could be a character who is adopted into a pure - blood family and has to navigate the complex politics of the wizarding world's blood hierarchy. They might face discrimination from some traditional pure - bloods while also trying to find their place within the family's expectations.
One possible plotline could be that Harry's adopted Veela family helps him discover new magical abilities that are unique to their Veela heritage. This could give him an edge in his battles against Voldemort.
In this 'harry is blood adopted by potter fanfiction', a great plotline could be Harry's struggle to find his identity. He's now part of the Potter family in a more profound way, but he also has his own experiences and personality. There could be a story arc where he tries to blend the two, while also dealing with the fact that his adoption might have been part of some greater plan. Maybe he uncovers a conspiracy behind his adoption, which involves dark wizards or hidden agendas within the wizarding world. This would not only change his view of his family but also his role in the fight against evil.