Maybe a fanfic could focus on the descendants of the minor characters in Dragon Ball. For example, the children of Yamcha and Puar could have their own adventures, using their unique skills and inheritances. This would give a fresh perspective on the Dragon Ball Legacies world.
Another interesting plot could be about a group of new characters who discover ancient Dragon Ball secrets that were lost in time. They then have to face off against old villains who also want these secrets, leading to epic battles and power - up moments.
One idea could be exploring an alternate timeline where Goku never hit his head as a child. He might grow up as a ruthless Saiyan warrior, changing the entire dynamic of the Dragon Ball universe.
One idea could be a time - traveling adventure where the heroes from different eras of Dragon Ball come together to face a new, powerful enemy in the Heroes universe. For example, Goku from the Saiyan Saga teams up with Goku Ultra Instinct from a later time.
A third idea is to focus on a tournament among the new generation. But instead of just physical combat, it also includes challenges related to knowledge of the Dragon Balls' history and power. This would not only test their fighting abilities but also their understanding of their own heritage.
One idea could be a fanfic where Goku discovers a new form that is a combination of Ultra Instinct and Super Saiyan God. This form gives him unique abilities and a new look. Another idea is to have Vegeta go on a solo adventure to a new planet filled with powerful foes that force him to develop a new fighting style. Maybe also a story where the Z - fighters have to team up with their old enemies like Frieza to fight a greater threat from another dimension.
Another plot could involve Towa traveling to different timelines not just to cause chaos, but to find a way to bring back a lost loved one. Maybe she has a family member from her own race who was killed in a long - ago battle, and she believes that by manipulating the Dragon Ball timelines, she can resurrect them. Along the way, she has to deal with the Z - Fighters who are trying to stop her time - meddling.
One idea could be a new villain from an unknown dimension arriving in the Dragon Ball universe. This villain has a unique power that nullifies ki attacks, forcing the Z fighters to rely on their martial arts skills alone.
One idea could be that Naruto and Goku meet during a interdimensional rift. They decide to have a friendly spar, with Naruto using his shadow clones and Rasengan while Goku goes Super Saiyan. Another could be that the Akatsuki are after the Dragon Balls for some reason, and the Z - fighters team up with the ninja of Konoha to stop them.
One idea could be exploring a dimension where the Saiyans never lost their planet and became a peaceful, advanced civilization. Another could be a dimension where the Z - fighters have to face off against versions of themselves that are corrupted by dark magic. Or perhaps a dimension where the Dragon Balls have different wishes and limitations.
One idea could be a gamer getting transported into the Dragon Ball Z universe and having to learn the ki techniques like a newbie Saiyan. They could start from the very bottom, training with Goku or Vegeta, and slowly rise in power. Another could be a gamer who has the ability to hack the Dragon Ball Z game world in a way that changes the rules, like making the Dragon Balls more accessible but with a new set of challenges to face when using them.
One idea could be a story where two female Saiyan characters from different timelines meet and form an unexpected bond. They could train together and face challenges side by side, while also exploring their new - found friendship which might have some undertones of a deeper connection.
One idea could be a crossover where Ruby and her team encounter the Saiyans. Maybe they team up to fight a common enemy that threatens both Remnant and the Dragon Ball universe. For example, a powerful demon or an ancient evil that has the power to destroy multiple dimensions.