In these fanfictions, the trope of Hermione facing discrimination from both Slytherins and Gryffindors is quite common. The Slytherins might think she's a spy for Gryffindor and the Gryffindors might see her as a traitor. Another trope is Hermione using her Slytherin connections to help Gryffindor in the long run. And the trope of her being the smartest in Slytherin and rising through the ranks in the house, challenging the existing power structure, is also frequently seen.
A popular trope is Hermione becoming a sort of reformer in Slytherin. She uses her intelligence to question the long - held beliefs and traditions in the house that are not so good. Also, the love - triangle trope often pops up. Maybe she has feelings for a Gryffindor while also being in Slytherin and having some Slytherin suitors. And then there's the trope of Hermione being underestimated by the other Slytherins at first, but then proving them all wrong with her knowledge and skills.
One common trope is the outsider - within - Slytherin. Hermione is smart and different from the typical Slytherin, so she has to find her place. Another is the redemption of Slytherin as a whole. With Hermione there, she might start to change the house's more negative aspects. There's also the friendship - turned - rivalry - turned - friendship again with characters like Draco. They start off on the wrong foot, become rivals, but then realize they can work together.
Well, if Hermione were sorted into Slytherin, it would drastically change the story. For one, her relationship with Harry and Ron would be strained at first. They might be suspicious of her motives. In the original story, Gryffindor values bravery and Hermione often showed that. But in Slytherin, she'd have to navigate the house's more cunning and ambitious nature. This could lead to her using her intelligence in different ways, perhaps more self - serving initially. It would also change the dynamic in the Slytherin house. She could potentially influence some of the Slytherins to be more open - minded, or she might face a lot of opposition from the more traditional Slytherins who don't like outsiders. Overall, it would be a very different Hogwarts experience for her.
The 'power - sharing' trope is also common. This could be where Hermione's magic and the powers of the vampires or other supernatural beings in The Vampire Diaries interact in unexpected ways. Maybe she uses her magic to enhance their powers or vice versa. It creates a lot of interesting plot possibilities.
In many 'Training Hermione Granger' fanfics, the 'training montage' trope is quite popular. It's like in movies where you see a series of scenes showing Hermione getting better and better at her skills over time. Also, the 'forbidden knowledge' trope often appears. Hermione delves into magical knowledge that is considered dangerous or forbidden, and her training is centered around handling this knowledge without getting corrupted. Another trope is the 'team - up' trope, where Hermione teams up with other characters, perhaps some from other magical schools, during her training for a common goal.
If Hermione was sorted into Slytherin, she'd bring a whole new dynamic to the house. Slytherin is known for its ambition and resourcefulness, and Hermione has those traits in spades. She might change the perception of what it means to be a Slytherin. Instead of just being about pure - blood supremacy and cunning for the sake of it, she could introduce a more ethical form of ambition. Her study habits would probably influence some of the other Slytherins to be more studious. And she'd also have to navigate the politics within Slytherin, which could be a real challenge as she's used to the more straightforward environment in Gryffindor.
One interesting plotline could be Hermione struggling to fit in Slytherin at first. She's used to the values of Gryffindor, so being in Slytherin where ambition and cunning are prized in a different way would be a big adjustment. For example, she might have to deal with the initial suspicion from her Slytherin housemates who are not used to having a 'Mudblood' among them. But as time goes on, she could use her intelligence to show them that she belongs there and maybe even change some of their views on blood purity.
Well, usually it leads to a lot of interesting plot twists and character developments. Maybe Snape has a hidden agenda or Hermione discovers new sides of herself in Slytherin.
Draco Malfoy would be a likely character. Since they are in the same house now, they would have more opportunities to interact. Their relationship could start off as hostile as always, but then gradually change as Hermione shows different aspects of herself in Slytherin.
Another development could be her relationship with the other houses changing. The Gryffindors might initially be suspicious of her new Slytherin status. However, Hermione could use this as an opportunity to bridge the gap between the two houses. She could show that just because she's in Slytherin doesn't mean she's abandoned her Gryffindor courage and loyalty.
One common trope is the 'fish out of water' where Hermione finds herself in Klaus's world and has to adjust. Another is the 'enemies to lovers' as their personalities are quite different at first glance. And there's also the 'power couple' trope where they team up and use their combined skills and powers.
Well, the 'Forced Proximity' trope is often used. Maybe they have to work together on a project, like renovating the joke shop or something, and that forces them to be close and get to know each other better. The 'Secret Relationship' trope is also popular. They might keep their relationship a secret at first because they're not sure how their friends will react. And then there's the 'Shared Trauma' trope which is based on their experiences during the war and how that bonds them.