Well, first of all, a good 'felicity crossover fanfiction' should have a strong premise for the crossover. It can't just be a random throw - together of characters. There needs to be a reason for Felicity to cross over into another show's world. Additionally, the fanfiction should stay true to Felicity's character. Her skills, her personality traits like her intelligence and her sense of humor, should all be intact. And of course, the overall story should be engaging, with enough action, drama, or mystery to keep the reader interested from start to finish.
Character interaction is a key element. You want to see how the characters from different shows or universes interact with each other. For example, in a Recess and Pokémon crossover, how would TJ and his friends react to seeing Pokémon? Another important thing is the plot. It should be engaging and make sense in the context of the crossover. It can't just be a random mash - up of the two concepts.
Character consistency is key. Spinel has a very distinct personality, so the fanfiction should keep that intact even in a crossover. For example, her playfulness and her past traumas should be reflected properly.
Character interactions are key. Since it's a crossover, seeing how characters from different sources react to the concept of envy and to each other is really interesting.
Character consistency. Thor should still be recognizable as his Marvel self even in a different crossover world. For example, his strength, his sense of honor and his hammer - wielding abilities should be intact.
One important element is novelty. If it's just a rehash of existing stories from either Atlantis or the other universe in the crossover, it won't be very interesting. A good atlantis crossover fanfiction will introduce new ideas, like new uses for Atlantis technology in the other universe or new relationships between characters. Another key factor is the world - building. How does the crossover affect the geography, politics, and culture of both worlds? For instance, if Atlantis is crossing over with a post - apocalyptic world, how does Atlantis adapt to the scarcity of resources? And finally, the writing style matters. A clear, engaging writing style will make the crossover fanfiction much more enjoyable to read.
One important element in axl crossover fanfiction is how the crossover is justified. There has to be a reasonable explanation for how Axl ends up in the other world or story. Another thing to look for is the development of Axl's character within the new context. Does he learn new things? Change in some way? And finally, the overall theme of the fanfiction. Is it about friendship? Survival? This can add depth to the story and make it more than just a simple crossover.
The plot should make sense in both the FF15 world and the world it's crossing over with. For example, if it's crossing over with a sci - fi world, the way the two different concepts blend together should be logical. A good ff15 crossover fanfiction also often has a unique take on the existing FF15 lore, expanding or reinterpreting it in an interesting way.
One key element is how well the two different universes are blended. For example, if it's an Inkheart and Lord of the Rings crossover, the magic systems need to be reconciled in a believable way. Another element is the character interactions. The characters from Inkheart should interact realistically with those from the other universe.
Character interaction is key. For example, if it's a Destiny and 'Star Wars' crossover, seeing how a Jedi might interact with a Guardian. Another important element is how the different universes' rules are combined. Like in a Destiny and 'Borderlands' crossover, how the looting systems work together.
An interesting plot. It should not just be a simple mash - up. There should be a real story, like maybe Roadhog is on a mission in the new crossover world to find something or someone. And the story should build on the relationship between Roadhog and the new characters he meets in the crossover, exploring how they interact and influence each other.