Perhaps the self - insert is from a future time period where they know about certain events that are about to occur in the 'Star Trek Next Generation' timeline. They then have to figure out how to use this knowledge without disrupting the natural flow of history while still trying to save the ship and crew from potential disasters. This could involve some complex moral and ethical dilemmas.
One idea could be that the self - inserted character is a new crew member with a unique skill, like being able to communicate with a previously unknown alien species. This could lead to all sorts of diplomatic and adventure - filled storylines as they help the Enterprise navigate new situations.
Well, a cool plot might be that your self - inserted character discovers a hidden technology on Voyager that was overlooked. This technology could potentially be the key to getting them closer to Earth faster. Or perhaps your character has a special medical knowledge that becomes crucial in treating an alien disease that threatens the crew. It would create a lot of tension and also show your character's importance in the Voyager universe.
One idea could be a crossover with the original 'Star Trek' series. Maybe the crew of the Enterprise - D meets the crew of the original Enterprise. They could exchange knowledge about different technologies and cultures they've encountered. Another idea is a crossover with 'Doctor Who'. The Doctor could land on the Enterprise - D and help the crew solve a time - related mystery that's beyond their understanding of space - time.
One interesting idea could be a crossover with another sci - fi franchise like 'Doctor Who'. Imagine the Doctor and the crew of the Enterprise - D interacting, with their different technologies and philosophies clashing and meshing. Another idea might be a crossover within the Star Trek universe itself, like bringing in characters from the original series into the Next Generation era in a unique way, perhaps to solve a galactic - scale mystery together.
One idea could be to insert yourself as a new crew member on the Enterprise. Maybe you have a special augmented ability like enhanced telepathy. You could use this to help the crew communicate with new alien species more effectively, and it would create interesting storylines as the crew discovers and deals with your unique ability.
First, study the existing characters in 'Star Trek Next Generation'. Notice their mannerisms, values, and how they interact with each other. Then, give your self - insert character a backstory that fits within the Star Trek universe. For example, if they're from Earth, what part of Earth are they from? What was their upbringing like? This will help ground the character.
One interesting 'Star Trek Next Generation' fanfiction could be about the crew facing a new and mysterious alien race that has technology far beyond what they've encountered. This would put their diplomatic skills and scientific knowledge to the test.
One idea could be the self - insert character being a long - lost apprentice of Revan. They could discover hidden Jedi teachings that Revan had left behind and use them to fight against the Sith. Another plot could involve the self - insert traveling back in time to the era of Revan and getting caught in the middle of the Jedi - Sith war, having to make choices that could change the course of history. Or perhaps the self - insert is a descendant of Revan and discovers their heritage while also uncovering a plot by the dark side to use Revan's legacy for evil.
Your self - insert character could be a spy who has infiltrated the Empire for years. In the fanfiction, you decide to defect to the Rebels after learning about some heinous plans of the Empire. You bring with you valuable information about Imperial troop movements and secret bases. This leads to a series of missions where the Rebels use your intel to strike at the Empire. Along the way, you struggle with your identity as a former Imperial and your new life with the Rebels, and form a relationship with Hera who helps you adjust to the Rebel way of life.
One idea could be that your self - insert character is an undercover agent sent to infiltrate the Inquisitors. They have to pretend to be loyal while secretly gathering information for the Rebellion. Another idea is that your character discovers a long - lost Sith artifact that the Inquisitors are also after, leading to a race against time and a battle of wits. Or maybe your character has a unique connection to one of the main Star Wars characters, like Darth Vader, and this connection causes all sorts of complications within the Inquisitor group.
The character development in the Star Trek The Next Generation novels is great. We get to see more of the inner thoughts and growth of the main characters like Picard and Data. They face new challenges that make them evolve in different ways compared to the TV series.