Luke's character could change drastically. He might become more of a maverick Jedi. For example, if he travels to a time when the Jedi were more dogmatic, he could rebel against some of those teachings. This would make him a more independent thinker. Leia could become more empathetic. If she witnesses the suffering of different species in different time periods, she would be more motivated to create a more inclusive and just galaxy in her own time. She would also use her diplomatic skills in new and different ways depending on the time period she visits.
Luke would likely develop a deeper understanding of the Jedi's roots. This could make him more traditional in his approach to the Force, or it could make him question some of the Jedi teachings he learned in his own time. Leia, on the other hand, might develop a more global view of the galaxy. Instead of just focusing on the Rebellion, she could see how different factions interacted throughout history, which would shape her leadership style in new ways. For instance, if she saw how the Sith influenced events from the shadows in the past, she would be more vigilant in her own time.
When traveling to the future, Luke could become more desperate. Facing a world in chaos or a new, powerful enemy, he'd have to quickly adapt and find solutions. This would make him more willing to take risks and use powers in ways he hadn't before. His view of the Force might also expand as he encounters new forms of it in the future.
Luke's character would develop a darker side, not in terms of being evil, but in having to face the inner turmoil of his vampiric existence. He'd have to constantly fight the urge to feed, which could make him more empathetic towards those who struggle with their own inner demons. His relationships with other characters would change significantly. Han and Leia might be hesitant to trust him at first, but as he proves himself, they'd come to accept him again. His physical abilities would also change, and he'd have to adapt his fighting style to his new vampire - enhanced strength and speed.
One interesting plot could be Luke and Leia traveling back in time to the Clone Wars era. They could try to prevent certain events that led to the rise of the Empire. For example, they might attempt to save Jedi who were wrongly killed. Another plot could be them traveling to the future to see the state of the galaxy after their time and then bringing back knowledge to change their present.
Han Solo is a great character to pair with them. His roguish charm and piloting skills add an interesting dynamic. He could be involved in a story where they all have to smuggle a crucial item across the galaxy while being chased by the Empire.
Bilbo might become more adventurous and less home - bound. His time - traveling experiences could make him bolder. For instance, he might be more willing to take risks in new situations. Aragorn, in contrast, could gain a deeper understanding of the long - term consequences of his actions. He would see how different choices in the past have led to the present situation in Middle - earth.
In time travel situations, they may have to rely on each other in ways they haven't before. For example, if they travel to a time when the Force is not well - understood, Luke may have to depend on Han's non - Force - related skills more. Leia might find herself in situations where she has to mediate between Han and Luke more often, strengthening their bond as a trio. Their relationships would grow deeper as they face new challenges together.
If they time travel, their relationships might become more complex. For example, if they go back in time to before they met, they might initially not trust each other as they do in their own time. Han might be more distrustful of Luke's Jedi abilities, and Leia might not see Han as the hero she knows him to be. But as they face challenges together in the past, they could form deeper bonds in different ways than they did originally.
As they work together more often, they might develop a friendship. For example, Ezra could teach Leia some of the more unorthodox ways of using the Force that he learned from Kanan, and Leia could introduce Ezra to the broader political landscape of the Rebellion. This exchange of knowledge would bring them closer.
In fanfiction, their relationship could develop more quickly towards mutual understanding. Maybe Luke could convince Vader to turn away from the dark side much earlier, and they could start training together as Jedi. This would be a huge shift from the original story.
For fem Naruto, traveling through time might make her more aware of the long - term consequences of actions. She might become more cautious and strategic, as opposed to her impulsive nature in the original timeline. Gaara, on the other hand, could become more open and trusting. Meeting different versions of people from the past might show him that not everyone is out to get him. He might also develop a better understanding of his own powers and how they fit into the grand scheme of the ninja world's history.