Another difficulty is melding the different universes' rules. If you're doing a Carrie crossover with the Lord of the Rings world, the magic systems are completely different. You have to figure out how Carrie's telekinesis would work in a world of elves, dwarves, and magic rings. It takes a lot of creativity and careful thought.
One challenge is staying true to the original characters. For example, Carrie has very specific traits and a backstory. When crossing her over into another universe, like say, the Star Trek universe, you have to make sure her character still makes sense. You can't just change her personality completely.
One challenge is maintaining Carrie's character traits. She has a complex personality due to her experiences, so when crossing her over, it's important to keep that intact. For example, her shyness and the power she holds. Another challenge is making the crossover believable. If she crosses into a very different universe like 'Star Trek', the writer has to find a logical way for her to fit in. And finally, there's the challenge of pleasing the fans of both the original Carrie White story and the universe she's being crossed into.
One challenge is getting the characterizations right. Since it's a crossover, you need to understand the essence of each character from both shows. For example, if you're crossing 'Scandal' with 'The West Wing', the political ideologies and working styles of the characters are very different. Another challenge is creating a believable plot that can merge the two universes smoothly.
Character consistency is also difficult. In 'Scream', the characters have very distinct personalities. When bringing them into a new universe, their actions and reactions need to stay true to their original selves. For instance, Sidney's strong - willed and resourceful nature should be maintained even when she's facing new and different threats in the crossover story. And that's not easy when you're mixing different story elements and rules.
When writing these crossovers, pacing can be an issue. Since you're combining two different settings and storylines, you need to find a good rhythm. For instance, if you're doing a Fallout and Final Fantasy crossover, the more fast - paced action of Fallout and the often slower, more story - driven parts of Final Fantasy need to be blended well. And then there's the matter of making the crossover seem believable to the readers who are fans of both universes.
One challenge is maintaining the integrity of the Watchmen universe. The unique tone and complex characters of Watchmen need to be accurately represented. Another is making the crossover seem natural. For example, if crossing over with a more light - hearted universe, bridging the gap between the dark Watchmen world and the other can be tough.
A major challenge in writing arcane crossover fanfiction is the fan expectations. Fans of both the Arcane world and the other universe you are crossing with have certain ideas and expectations. You need to satisfy both groups. If you deviate too much from what they expect, you might get a negative reaction. Additionally, world - building in a crossover can be a headache. You have to combine the rules of two different worlds, like the magic system in Arcane and whatever system exists in the other universe, and make it all make sense in the context of the story.
One challenge is getting the characterizations right. Homestuck has very distinct and complex characters, and when you cross them over with characters from another fandom, you need to make sure they all stay true to their original selves. Another is the world - building. Combining two different fictional worlds can be tricky to make it seem seamless.
One challenge is maintaining the integrity of the original 'Taken' story while integrating elements from the other franchise. For example, if it's a crossover with a superhero story, the gritty realism of 'Taken' might be hard to balance with the superpowers. Another issue is making the crossover believable. Readers need to be able to suspend their disbelief and see how the characters from two different worlds can co - exist and interact.
Characterization can be difficult. The necromorphs have their own set of behaviors and characteristics. When you cross them with characters from another fandom, you have to make sure the interactions are believable. For instance, if a necromorph meets Batman, how would Batman analyze and deal with this new type of threat? It needs careful consideration.
Character consistency is also a big deal. The characters in 'Dishonored' have their own personalities and motives. In a crossover, you need to make sure they act in - character even when put in new and strange situations from the other universe. And then there's the world - building aspect. Merging two different fictional worlds without making it seem forced is not easy.