One interesting plot twist could be that Voldemort actually has a change of heart. Maybe in the fanfiction, he realizes the futility of his dark ways after seeing the strength of Harry's love and friendship. Another could be that Harry discovers a new, unexpected power within himself that is not related to his typical Gryffindor courage or his connection to Voldemort's soul pieces. For example, he might find he has the ability to manipulate time in a way that gives him an edge in the battle.
In some fanfictions, a plot twist might be that the Hogwarts itself becomes an active participant in the Harry vs Voldemort battle. The castle could use its magic to protect Harry or even to hold Voldemort at bay. Also, there could be a twist where a minor character from Hogwarts, like a house - elf or a rarely - mentioned student, has a hidden power that they use to turn the tide of the battle. It makes the story more exciting as it gives a new perspective and new forces to the well - known battle.
Well, there are fanfictions where the plot twist is that Voldemort and Harry end up having to team up. Perhaps there is an even greater evil emerging that forces them to put aside their differences. This completely changes the dynamic of their relationship. Additionally, some fanfictions might have a twist where Harry is actually transported to an alternate dimension during the battle, and he has to find his way back and face Voldemort in a completely different setting, which adds a whole new layer of complexity to the story.
The Gryffindors, of course, are usually very vocal in their support of Harry. They might cheer him on, offer their own magical skills if they can, and be ready to fight alongside him. The Slytherins can have a more complex reaction. Some might side with Voldemort out of fear or ambition, but there could also be Slytherins who see the wrong in Voldemort's ways and secretly support Harry. The Hufflepuffs would likely be focused on protecting the innocent within Hogwarts and providing a sense of stability and comfort during the chaos. And the Ravenclaws might be analyzing the situation, coming up with strategies to help Harry or trying to understand the deeper magic at play in the battle.
In certain fanfictions, a plot twist is that Harry doesn't kill Voldemort directly. Instead, he uses his love and friendship magic in a very unique way. He manages to make Voldemort see the error of his ways, and Voldemort sacrifices himself to undo all the evil he has done. This is a very different take from the usual 'kill or be killed' scenario. Another interesting plot twist could be that the killing of Voldemort reveals a long - hidden prophecy about Harry that has nothing to do with the original prophecy, and this new prophecy sets Harry on a whole new path of discovery and adventure.
Another interesting twist is when Voldemort's minions betray him at the crucial moment, allowing Harry to capture him. This shows that Voldemort's own tyranny has led to his downfall in unexpected ways. In some stories, his closest Death Eaters realize that his rule will only lead to the destruction of the wizarding world and choose to side with Harry instead.
One interesting plot twist could be that Voldemort is secretly being controlled by an even more powerful dark force. It changes the whole dynamic as Harry now has to figure out not just how to defeat Voldemort, but also this other entity.
In 'Harry Potter and the Hogwarts Four Fanfiction', it could be that the four are actually part of an ancient prophecy that no one has fully understood yet. They might start to have strange visions or abilities that lead them to uncover the true meaning of the prophecy. This would not only change their understanding of their own roles at Hogwarts but also have a huge impact on the future of the wizarding world. They would have to figure out how to fulfill this prophecy while also dealing with the normal challenges of school life, like exams and rivalries between houses.
One interesting plot twist could be that a minor character from Hogwarts, like Neville, discovers a hidden power within the Deathly Hallows that was previously unknown. Maybe he realizes that the Elder Wand has the ability to not only transfer power through combat but also through acts of self - sacrifice, which completely changes the way everyone views the power of the Hallows.
In some fanfictions, there could be a plot point where the Hogwarts faculty gets involved in the exploration of Potter family memories. They might help Harry or other Potters understand the significance of certain memories. This could lead to new magical teachings or a change in the way Hogwarts is run, based on the insights from the Potter family's past.
One interesting plot twist could be that Harry Potter has to sacrifice his own magic to defeat Voldemort completely. In this scenario, after the final battle, Harry becomes an ordinary wizard - no more special powers. But he is okay with it as he has saved the wizarding world.
I'm not entirely sure about fanfictions specifically where Hogwarts watches AVPs. However, there are many great Harry Potter fanfictions out there. You could start by looking on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Try searching for unique crossovers or alternate universe stories that might have an interesting take on Hogwarts and the characters.
Perhaps a plot twist could be that the Ministry of Magic tries to interfere with Harry's pregnancy because they fear the implications it might have on the wizarding society. They could try to force Harry into hiding or even attempt to separate him from Charlie. However, Harry and Charlie, with the help of their friends, fight back against the Ministry's unjust actions. This would not only create a lot of drama but also show the strength of their relationship and their determination to protect their family.