A great plot for this fanfiction could be that the magic from the Harry Potter world is actually an ancient form of the Force that has been forgotten in the 'Star Wars' universe. So, a group of wizards and witches from Hogwarts, led by Ron Weasley, travel to the 'Star Wars' galaxy to teach them about magic. However, they soon find out that the Dark Side of the Force is very similar to the Dark Arts in their world, and they have to fight against it together with the Jedi and the Resistance. This would bring a whole new dynamic to both universes.
One possible plot could be that Harry Potter, while exploring new magical realms, stumbles upon a portal that leads him to the Star Wars universe. There, he meets Rey and they discover that magic and the Force have some similarities. They could team up to fight against a new dark force that is threatening both their worlds.
One idea could be exploring the backstory of Rey's parents in more detail. Maybe they were part of a secret Jedi order that was in hiding. Another could be a story about Finn's life before he defected from the First Order, like his training and relationships with other stormtroopers. Also, a fanfiction could focus on Kylo Ren's struggle with the light side of the Force that he tries to suppress.
One idea could be exploring the backstory of a new character in more detail. For example, a young Stormtrooper who begins to question the First Order's motives. Maybe they have an encounter with a hidden Jedi or someone with Force sensitivity that makes them start to doubt their training.
One interesting plot could be that there is a magical rift that opens between the world of Glitter Force and the wizarding world of Harry Potter. As a result, characters from both worlds start to swap places or interact in unexpected ways. For example, the Glitter Force girls end up in Hogwarts and have to navigate the wizarding school while also trying to find a way back home. At the same time, some Hogwarts students could end up in the Glitter Force world and learn about their powers. This would lead to a lot of comical and exciting situations as they all try to adapt to the new environments.
Well, in some 'Star Wars Force Awakens' fanfiction, there are concepts like a hidden Jedi order that has been secretly guiding events. This adds a whole new layer of mystery to the story. Also, there could be fanfictions that focus on the relationship between Finn and Poe in more detail, showing their friendship developing in different scenarios. Some might even rewrite the entire plot to make Kylo Ren a more complex and redeemable character from the start.
One idea could be exploring the backstory of Rey before she was found on Jakku. Maybe she had some secret training as a child that she's forgotten. Another is delving deeper into Finn's struggle with leaving the First Order. He could have some internal conflicts about his past comrades.
Another theme is the cultural exchange. The characters from the two universes come from very different backgrounds. So, in the fanfiction, you might see how a female Harry Potter adapts to the Star Wars universe and vice versa. This could include things like how she reacts to the different social hierarchies or the technology in the Star Wars world.
I think Hermione would be the most interesting. She's highly intelligent and resourceful. In 'The Force Awakens' world, she could use her vast knowledge of magic to analyze and perhaps even enhance the technology there. She might also be able to come up with unique strategies against the First Order using her magical skills, like creating illusions to deceive the enemy or using spells to protect the Resistance bases.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
There are quite a few out there. One interesting one might be on FanFiction.net. You can search for it using the tags 'fem Harry Potter' and 'The Force Awakens'. However, the quality can vary greatly, so be prepared to sift through some not - so - great ones to find the real gems.