A key element is Thorax's character development. He goes from being a typical changeling to one who understands and values friendship. Another element is the relationship between changelings and ponies. Fanfics often explore how they can coexist.
One popular MLP FIM Thorax fanfic is 'Thorax's Journey'. It delves into Thorax's experiences as he tries to integrate his changeling colony with the ponies in Equestria. It shows his struggles and how he overcomes the prejudices of both sides.
Some Applejack fanfics might be set in an alternate universe. Maybe in a world where Applejack has to learn a new type of farming technique from a far - off land. This would not only test her adaptability but also show how she can bring new ideas back to her family's farm in Equestria.
There's this fanfic called 'The End of an Era'. It's set in a post - apocalyptic Equestria. The ponies are trying to rebuild their world, but they keep facing setbacks. The bittersweet nature lies in their hope in the face of so much destruction.
Friendship is a very common theme, just like in the original show. Many fanfics explore the relationships between the ponies and how they overcome difficulties through friendship. Another common theme is magic. Since magic is an important part of the MLP FIM world, fanfics often involve ponies using magic in different ways.
One great fim mlp fanfic could be those that explore the backstories of the main characters in more depth. For example, a fanfic might focus on Twilight Sparkle's early days at the School for Gifted Unicorns, detailing her struggles and how she overcame them to become the princess we know. Another interesting type could be the ones that create new adventures for the Mane Six, like a journey to a far - off and mysterious land in Equestria that has never been explored before.
There's 'Fallout: Equestria' which is a crossover that brings the post - apocalyptic world of Fallout into the My Little Pony universe. It has a complex storyline full of adventure, danger, and the charm of the ponies. The fic explores how the ponies would survive in such a harsh world and has some really interesting character developments.
The contrast. In bittersweet MLP FIM fanfic, there's often a contrast between happy and sad elements. For example, a pony might achieve a great goal but lose someone important in the process.
It's not popular at all. Popular MLP fanfics tend to be those that explore the core themes of the show, such as the magic of friendship, the challenges the ponies face, and their growth. 'Rarity butt inflation fanfic' is a very niche and rather unappealing concept to the general MLP fan base. It goes against the more common and positive types of stories that fans usually look for, so it's not likely to be something that has a large following.
One good MLP FIM Cupcakes fanfic could be 'The Mysterious Cupcakes Adventure'. It might involve the ponies trying to figure out the origin of the special cupcakes in Ponyville.