One idea could be that the bully has a hidden reason for their behavior, like they are being bullied at home. So they take out their frustration on the main character in 'Girl Meets World'.
A possible plot could be that the bully is new to the school in 'Girl Meets World'. They act tough to fit in but end up targeting the wrong person. The main character decides to show the bully what true friendship is all about by including them in activities, which gradually changes the bully's attitude.
One idea could be that the new generation faces a school crisis, like a strict new rule that they think is unfair. They could start a peaceful protest to change it, just like the old characters might have.
A possible plot could be that she uses the art of seduction to get a role in a school play. She woos the director with her presence and talent, showing that seduction isn't just about looks but also about having a certain allure in how you present yourself and your abilities.
One idea could be a crossover where characters from both shows meet in a shared universe. For example, Cory and Topanga from 'Boy Meets World' could meet Riley and Maya from 'Girl Meets World' and they all go on an adventure together in New York City. They could help each other with their personal and relationship problems, sharing their different experiences from their respective shows.
One idea could be a fanfic where Riley travels back in time to when her parents were her age and she tries to understand them better. Another could be Riley getting involved in a mystery at school and using her unique perspective to solve it. Maybe a fanfic about Riley going on an adventure in a magical world that she discovers through an old book in the library.
One idea could be that Lucas and Maya get lost in a big city during a school trip. They have to rely on each other to find their way back, and in the process, they discover new things about themselves and their feelings for each other.
One idea could be that Riley and Maya are now teachers at their old school. They have to deal with a new generation of students who are facing different but equally challenging problems. It would be interesting to see how they use their own experiences growing up to guide these kids.
One idea could be Ginger getting involved in a school project that goes awry but in the end teaches everyone a valuable lesson about teamwork. For example, she might be part of a group making a short film and they face issues like equipment failure and creative differences.
One idea could be Lucas having a secret talent that he reveals during a school competition in the fanfiction world. For example, he might be an amazing singer but has been too shy to show it until a talent show episode.
One idea could be Riley and her friends from Girl Meets World somehow end up at Hogwarts through a magical portal. They could be sorted into different houses and have to navigate the challenges of Hogwarts life while also bringing their own unique personalities from Girl Meets World. For example, Riley's positive attitude might clash with some of the more traditional Hogwarts ways at first.
Some interesting fanfiction ideas could involve character growth. Maybe write about how a minor character from 'Boy Meets World' gets a chance to shine in 'Girl Meets World'. For instance, Minkus could have become a successful scientist and he comes to give a talk at the school in 'Girl Meets World'. Or you could focus on the friendships. Write about how the friendships in 'Boy Meets World' influenced the way friendships are formed in 'Girl Meets World'. Like how Cory, Shawn and Topanga's friendship was a model for Riley, Maya and Farkle.