Character interaction is a key element. The way Harry and the professor interact, whether it's through shared magical knowledge or personal conversations, forms the base of the story. Another is the magical setting. Since it's set in the Harry Potter universe, the use of spells, potions and magical creatures often plays a big role.
There's also 'The Hidden Connection'. In this fanfiction, the relationship between Harry and the professor is depicted in a very nuanced way. It shows how their interactions change over time, with elements of mystery and magic intertwined. It's a great read if you like stories that focus on the emotional growth of the characters within the magical world.
Male professors are important in Harry Potter fanfiction because they can add depth to the already rich world of Hogwarts. They can be a source of conflict or support for the students. For instance, a male professor might have a grudge against a particular house and treat those students unfairly, or he could be a great advocate for a group of underrepresented students. Their presence can also drive the plot forward, whether through their own actions or by influencing the actions of the students.
In some ways, it could be seen as positive. Hermione is a complex and beloved character. Professors might desire Hermione fanfiction because it can offer new insights into the character, different from what's in the original books. For example, fanfictions might explore her life after Hogwarts in ways the official series doesn't. But they still need to maintain appropriate boundaries as educators.
Since 'lemon' fanfiction contains inappropriate material, we should steer clear of it. You can try to find fanfictions that delve into the more positive aspects of Hermione's relationships with her professors. Maybe there are stories about how they collaborate to solve a mystery in Hogwarts, or how a professor encourages Hermione to pursue her dreams in the magical field. These types of fanfictions can be both enjoyable and in line with good taste.
Snape is a very popular one. His complex character and his relationship with Harry in the original series provide a lot of material for fanfiction writers. They can explore different sides of his personality and create new storylines around him.
A fanfiction might involve a Pokemon professor traveling to the Naruto world. He could study the unique flora and fauna there, thinking they might have some relation to Pokemon. Maybe he tries to capture some of the Naruto world's creatures with Pokeballs, only to find they don't work as expected.
One interesting 'Harry Potter Professors' fanfiction could be one that focuses on the backstory of Professor Snape before he came to Hogwarts. It might explore his relationship with Lily as a young wizard. Another could be about Professor McGonagall's early days as a teacher and how she dealt with the challenges at that time. There are also fanfictions that imagine different interactions between the professors, like a story where Professors Flitwick and Sprout collaborate on a special project for the school.
McGonagall might be involved too. She is a very proper and strict professor, but there could be secrets about her life outside of Hogwarts, or some magical knowledge she has that she's been keeping under wraps for some reason, like a unique form of transfiguration she discovered.
It adds a new dimension to the fandom. For some fans, it provides a different perspective on the relationships within Hogwarts. It allows for exploration of female - female relationships in a world that was mainly focused on male - female and male - male friendships in the original series. It can also attract new fans who are interested in femslash content. For example, those who love reading about complex relationships between strong female characters like Hermione and her professors.