One common theme is self - discovery. Harry Court often goes through a journey where he learns more about himself. Another theme is friendship, as he forms new relationships or strengthens existing ones.
Yes, there are some really interesting ones. You can find them on various fanfiction websites. Some focus on how Harry's presence in Slytherin changes the dynamics within the house and his relationships with other Slytherins.
Maybe some unexpected allies could emerge. For example, a centaur who has witnessed the unjust actions of the court might come forward to help Harry. Or a goblin who has knowledge of the court's financial misdeeds could offer assistance. Harry's reputation for being a hero could attract all sorts of beings who want to see justice served in the court.
Perhaps in this fanfiction, the court in the wizarding world has been corrupted. Harry discovers some dark secrets within the court system. He then decides to fight against it to bring justice. He might start by gathering evidence against those who are misusing their power in the court.
In fanfiction, Harry Potter could be wrongly accused of using dark magic in court. Maybe some false evidence is presented against him, like a planted dark magic item. And he has to fight to prove his innocence.
Harry Potter is of course a very common character. Since he's the main character in the original series, he often plays a significant role in court fanfiction as well, either as a witness or someone involved in the case.
Some of the younger students who looked up to Harry, like Neville, could support him. Neville has grown to be a strong and brave character. He might see Harry's actions as a way to make the wizarding world a better place. Also, those students who have felt wronged by Dumbledore's decisions in the past, perhaps in terms of school policies or safety, could come forward to support Harry in the court case.
There's also 'Harry Court and the Mysterious Artifact'. This fanfiction is well - written, with a great plot that keeps you on your toes. It has some amazing character development for Harry Court.
The plot could involve Harry's struggle to be accepted in Slytherin while still maintaining his own identity. His court in Slytherin could be a group of outcasts in the house who he befriends and together they work against the pure - blood supremacist ideas that some Slytherins hold. This would create a lot of conflict and drama as they go against the traditional Slytherin hierarchy.
In some fanfictions, Harry might use his quick thinking and knowledge of magic laws. He could present evidence clearly, like memories in a Pensieve to prove his innocence. For example, if wrongly accused of using dark magic, he could show how the situation was misinterpreted by bringing witnesses who saw the real events.