It's hard to say for sure. Different people might have different ideas of how the story ideally should have ended depending on their expectations and interpretations.
It depends on the genre and the themes of the story. Different types of stories might have very different ideal endings based on what the readers or viewers expect and what the story has built up to.
It enhances it by adding more stories. The movies only have so much time to tell a story, but fanfiction can expand on different aspects. For example, we can learn more about the daily life in the park or how the dinosaurs interact with each other off - screen.
In 'a jurassic world of science fiction', there would likely be more far - fetched elements like alien - influenced dinosaurs or interdimensional travel compared to the more grounded (though still fictional) regular Jurassic World.
It's hard to say for sure. Different people might have different ideas about the ideal ending. Maybe it could have had a more conclusive resolution for the main characters.