Perhaps in the 'a new order' fanfic, the Ministry of Magic is completely reformed. Instead of being bureaucratic and often corrupt, it becomes a more democratic and inclusive institution. Harry Potter and his friends could be at the forefront of this change, having to deal with the old - guard who resist it. They might have to fight political battles as well as magical ones to bring about this new order.
One idea could be that in this new order, Hogwarts starts accepting students from all magical creatures, not just witches and wizards. This would lead to a whole new dynamic in the school, with different cultures and magic types interacting.
One interesting plot idea could be exploring the backstories of the minor characters in the Order more deeply. For example, what made them join the Order and their personal struggles during the fight against Voldemort.
Well, in a 'new normal' Harry Potter fanfic, perhaps the Ministry of Magic decides to open up more to the Muggle world in order to promote better relations. So, Hogwarts starts an exchange program with some Muggle schools. This would bring a whole new set of challenges and friendships. Also, the way Quidditch is played could change. Maybe there are new safety regulations for players, like wearing special protective charms all the time.
One idea could be the new marauders getting into trouble with a new set of magical artifacts that have been hidden in Hogwarts for centuries. They might discover a map that leads to these artifacts, much like the Marauder's Map. Another could be their interactions with the ghosts in Hogwarts in a more adventurous way, like trying to solve a mystery that the ghosts have been keeping for ages.
In some fanfictions, a plot idea is to have Harry gain a new power. In the context of 'Harry Potter Order of the Phoenix', it could be a power related to his connection with the late Sirius Black. For instance, he might be able to communicate with Sirius in a new way, like through dreams more vividly. This could change the way he approaches his fight against Voldemort and the Death Eaters. Also, a plot could involve the Ministry of Magic having a more complex internal struggle that affects the Order's operations.
The main plot of such a fanfic could be something like a time travel element where Harry has to correct a past mistake to ensure a better future. Or it could be a story about a new magical government order that changes everything for wizards and witches.
Well, perhaps in the 'harry potter in the order fanfic', a major character's magical ability is suddenly revealed to be much different than what was originally thought. Like Hermione, who was always known for her book smarts, might have a hidden and extremely powerful combat - based magic that gets uncovered during a crucial battle. This would completely change the dynamics of how she is perceived within the Order and how she can contribute to their cause.
One idea could be a crossover where the magical world of Harry Potter has to deal with crimes similar to those in Law and Order SVU. For example, there could be a case of a dark magic - related assault in the wizarding world, and the characters from both universes team up to solve it. Maybe Hermione uses her knowledge of laws and spells to help the SVU detectives understand the magical aspects.
One idea could be that the new generation discovers a time - turning device left by Hermione. They travel back to the time of the first Triwizard Tournament. There, they meet a young Sirius Black and Remus Lupin, and get involved in the mystery surrounding Cedric Diggory's death in a new way.
Well, you could have a fanfic where Voldemort uses DND - style dark magic to open portals to other dimensions. The Order of the Phoenix has to quickly learn DND - style combat and magic rules to fight off the new threats that come through these portals. Harry could be sent on a special mission to find a DND - style mage who can teach them the counter - spells. Meanwhile, the Death Eaters are also trying to master this new form of magic for their own evil purposes. This would create a really exciting and unique story.
Perhaps a plot where the protagonist can choose to either side with the Ministry of Magic during a time of political unrest within the wizarding world or join a rebel group. This would involve different magical battles and moral dilemmas depending on the choice. In the 'harry potter cyoa fanfic', this could show different aspects of the wizarding society that we don't often see in the original books.