The cultures in both universes are also ripe for exploration in the crossover. The Federation's values of equality and cooperation in Star Trek contrast with the more hierarchical and often morally ambiguous cultures in Star Wars. A story could focus on how characters from each side learn from or clash with the other's cultural norms.
I think Star Wars novels are better. The Star Wars universe is filled with so many iconic characters like Luke Skywalker, Darth Vader, and Princess Leia. The novels expand on their stories in ways that the movies can't always do. There's also the allure of the dark side and the light side of the Force, which adds a layer of mysticism. Star Trek novels are good too, but they lack that kind of mythic, larger - than - life quality that Star Wars has.
One key difference is the overall tone. Star Wars fanfiction often focuses on the battle between good and evil in a more 'epic' sense, with the Force playing a central role. In Star Trek fanfiction, there's more exploration of different cultures and moral dilemmas. Another difference is the technology. Star Trek has a more utopian view of technology, while Star Wars technology is often more about raw power and combat. Also, the characters in Star Wars fanfiction tend to be more archetypal heroes and villains, compared to the more complex and diverse characters in Star Trek fanfiction.
It's really hard to say which has more popular fanfiction. Both have huge and dedicated fanbases. Star Wars has the advantage of being more mainstream in recent years with the new movies. However, Star Trek has a long - standing and very loyal following. It might depend on the platform you look at. Some sites might have more Star Wars fanfiction due to the hype around the new releases, while others that are more focused on science - fiction in general might have a more balanced amount of both.
There are fanfictions that explore the concept of a crossover in a more humorous way. In some, Chewbacca and Worf end up in a series of comical misadventures together. They might misunderstand each other's cultures and languages at first, but then gradually form an unlikely friendship as they work towards a common goal, like saving a planet that is important to both Star Wars and Star Trek universes.
One popular theme is the exploration of alternate universes. In Star Wars fanfiction, it could be a universe where the Empire won. For Star Trek, it might be a universe where the Federation has different relationships with other species. Another theme is character crossovers, like having a Star Wars Jedi interact with a Star Trek Vulcan. And of course, there are often romances between characters from the two universes, which fans find really interesting.
One popular theme is the exploration of alternate universes. For example, a story might show what would happen if the Federation from Star Trek and the Galactic Republic from Star Wars had to form an alliance. Another theme is character crossovers, like having Captain Kirk meet Luke Skywalker. And relationships between characters from the two universes are also explored, such as a friendship or a rivalry between a Starfleet officer and a Jedi.
It can seem strange at first. However, if we think of it in terms of the franchise's influence on the fanfiction and vice versa, it's not so odd. The official Star Trek has inspired a vast amount of fanfiction. And in a way, the existence of that fanfiction is like a feedback loop that the franchise can 'observe'. So, while it's an odd concept literally, it makes more sense when considering the relationship between the two.
One great 'Star Trek Star Wars Crossover Fanfic' is 'The Federation in the Galaxy Far, Far Away'. It combines the technological sophistication of Star Trek with the epic space opera feel of Star Wars. The story has the crew of the Enterprise finding themselves in the Star Wars universe and having to navigate the political and military landscapes there. It's a really exciting read for fans of both franchises.
Character development is another factor. Characters from both series can grow in new ways when exposed to the different rules and cultures of the other universe. For example, a Star Trek character might have to grapple with the concept of the Force, which could lead to a deeper understanding of their own beliefs and abilities.