The different interpretations of the characters are great. In some fanfictions, Goku Black might be portrayed as even more evil or cunning than in the original series, and Hit could be shown with new strategies. For instance, a fanfiction might have Hit teaming up with other characters from different universes to take on Goku Black, which adds a whole new dimension to the story.
There's also a fanfiction called 'Hit's Vengeance on Goku Black'. In this one, Hit is on a mission to avenge the destruction Goku Black has caused in the multiverse. It has some really intense fight scenes that are well - written. The author does a great job of portraying Hit's calculating nature and Goku Black's menacing presence.
One possible storyline could be that Naruto is somehow transported to Goku Black's universe. There, he has to face Goku Black who sees him as an intruder. Naruto would have to quickly learn about Goku Black's powers and find a way to fight back using his ninja skills. Another storyline could be that a powerful villain creates a rift between their two universes and pits them against each other. They start off as enemies but then realize they are being manipulated and team up to fight the real villain.
There could be a storyline where Beerus, out of boredom, decides to train Goku Black instead of fighting him. But Goku Black misinterprets this as a sign of weakness and attacks Beerus. This could lead to a battle where Beerus has to hold back at first to avoid killing Goku Black, but as the fight progresses, he realizes he has to use his full power to subdue him.
Character development is also crucial. In many such fanfictions, Female Goku Black may start as a villainous or at least antagonistic character. But as the story unfolds, she might change due to her interactions with Goku. This transformation can be really interesting to follow. For example, she could start to question her own motives or even develop feelings for Goku, which is a big shift from her initial stance.
One possible storyline could be that Goku Black arrives on Earth in search of a powerful energy source. The Justice League detects his arrival and confronts him. At first, they underestimate his power. Goku Black easily defeats some of the members, but then the League starts to work together and figure out his weaknesses. Another storyline could be that an evil entity has brought Goku Black to the DC Universe to cause chaos and the Justice League has to stop him while also dealing with the entity. Or perhaps Goku Black is tricked into thinking the Justice League are enemies of the Saiyans and he attacks them, only to later find out the truth and have to team up with them to fight a greater threat.
Definitely the potential for epic battles. Picture Goku going up against the Four Emperors all at once. His speed and strength could turn the tides in a battle that the One Piece world has never seen before. Also, his friendship with Luffy could lead to some really heartwarming moments. They both share a love for adventure and fighting strong opponents. And Goku's ability to sense energy could be a game - changer in a world where most rely on observation Haki. It could open up new ways of detecting threats and finding hidden things in the One Piece universe.
One common theme is the clash of different power systems. Star has her magic from the 'Star vs the Forces of Evil' universe, and Goku Black has his Saiyan powers from Dragon Ball. Another theme could be the exploration of good and evil. Goku Black is a villain, so stories might focus on how Star and her friends deal with his malevolence. Also, the idea of interdimensional travel can be a theme, as Goku Black is from a different universe in Dragon Ball and would have to cross into Star's world.
One exciting moment could be when Naruto first unleashes a small amount of Kyuubi's chakra, and the shockwave makes Kiba and Akamaru realize the power they're up against. Another moment might be when Kiba tries to use his speed and agility to get close to Naruto, but Naruto quickly counters with a Kyuubi - enhanced Rasengan. And finally, a great moment could be when Naruto goes into a partial Kyuubi transformation, his eyes glowing red, and Kiba has to come up with a last - ditch strategy to try and survive.
One exciting moment could be when Naruto first clashes with the powerful members of the Phantom Lord. His unique jutsu against their dark magic - like Rasengan against some of their shadow - based attacks.
The power struggle is really exciting. Shirou with his determination and unique abilities against Gilgamesh, who is extremely powerful and arrogant. It's like seeing an underdog trying to take on a seemingly unbeatable foe.