One interesting plotline could be about the moral dilemmas the Augments face. For example, how they struggle to fit into a society that fears their enhanced abilities. They might have to constantly prove that they don't mean harm.
One of the most popular characters is Khan. He is a well - known Augment from the original Star Trek series. His intelligence and strength make him a very interesting character to write about in fanfiction.
Well, some fanfictions might focus on the relationships between the characters that were only hinted at in the original. For example, the relationship between Spock and his parents. They could expand on the emotional turmoil Spock might have felt during the events of 'Journey to Babel'. Also, there could be plotlines where new threats are introduced during the diplomatic mission that wasn't in the original, adding more action and adventure.
One interesting plotline could be exploring the backstories of the crew members in more detail. For example, delving deeper into Tuvok's time in the Vulcan High Command before joining Voyager. Another could be alternative ways the crew might have interacted with the Caretaker if they had more knowledge about his intentions from the start. Maybe a fanfic could focus on how the crew's relationships change differently in the Delta Quadrant due to some event in a Caretaker - related scenario.
One possible interesting plotline could be the unexpected alliances that form between different species in the Star Trek universe within the context of 'tangled destinies'. Maybe a Klingon and a Vulcan have to work together due to some strange cosmic event that ties their destinies. Another could be the exploration of alternate timelines where the destinies of beloved characters are tangled in ways that change the course of the Star Trek story we know.
One common plotline could be Ben Wyatt using his skills from his normal life in a Star Trek - like situation. For example, his financial management skills helping to deal with resources on a starship.
Well, in Star Trek TG Story, there might be plotlines related to time travel. Imagine the crew going back in time and having to make sure they don't disrupt the timeline too much. They might meet their past selves or change the course of history in unexpected ways. Also, the development of new technologies within the story can be really engaging. For example, the improvement of warp drive or the discovery of new forms of energy.
One interesting plotline could be the exploration of new alien species in the Star Trek Infinity universe. Maybe the crew discovers a species with unique abilities or a very different culture.
One interesting plotline could be them working together on a dangerous mission outside the ship. Maybe they have to rely on each other's unique skills, like Tom's piloting and Chakotay's survival and spiritual knowledge, to get through it.
One plotline could be that Ash discovers a hidden secret about Michael's past that changes their dynamic. It could be something that makes him see her in a whole new light and forces them to reevaluate their relationship.
One interesting plotline could be about the traveller's encounters with new and strange alien species in the Star Trek universe. Maybe they form unexpected alliances or face unique challenges.