Well, Sasuke could be like a brooding Jedi. His skills with a lightsaber might be similar to his ninja sword skills. He'd be constantly seeking more power, perhaps tempted by the dark side. Sakura, on the other hand, could be a healer Jedi. She would use her medical knowledge from the Naruto world to help injured Jedi. Her strong will would make her a great Jedi in the Star Wars universe.
One storyline could be that Sasuke is a fallen Jedi and Sakura is sent to find him. She has to face many challenges in the galaxy to reach him and then convince him to return to the light side. Another could be that they are both on opposite sides of a galactic war. Sasuke is with the evil empire - like the Sith - and Sakura is with the rebels. They have to fight each other but also deal with their feelings.
Yes, there might be such fanfics out there. In the Naruto fandom, with a large number of fans creating various types of stories, it's possible that some would write a story where Naruto destroys Sasuke in a way that could be seen as Sasuke - bashing. However, these kinds of fanfics may not be in line with the overall spirit of the original work which focuses on their complex relationship and growth.
There could be Naruto. Since he and Sasuke have a strong connection in the original series, he might also be involved in the gamer fanfiction, maybe as a rival or teammate in the gaming world.
In this kind of fanfiction, Sasuke could die from a sneak attack. He might be so focused on his main target during the Wave mission that he doesn't notice another hidden threat. And this hidden enemy could strike him when he least expects it, leading to his death. For example, an assassin could be hired to specifically target Sasuke and use some sort of poison or a deadly jutsu that he can't defend against in time.
There could potentially be some really creative and out - of - the - box fanfictions with this concept. But finding one might be a challenge. You could try searching on specialized fanfiction websites and use specific search terms like 'Kakashi Sasuke non - traditional relationship fanfiction' and then look through the results to see if there are any that involve the idea of Sasuke being pregnant. But remember, this is a very unusual concept even for fanfiction.
Sasuke would probably be very guarded at first. He's not used to dealing with something so innocent and vulnerable. He might be suspicious of the baby's presence and think it's some sort of trap.
He might meet the future versions of Naruto and Sakura. Their relationship with him could be very different in the future, perhaps they are now leaders of the village and Sasuke has to adjust to their new status.