For Yamcha, you can focus on his growth from being a bit of a comical character to a more serious and respected fighter in the context of his relationship with Frieza. Maybe he learns from Frieza's cold and calculating nature how to better strategize in battles. For Frieza, his development could be about him learning to care for someone other than himself. He could start to see Yamcha as an equal, which is a huge shift from his usual superiority complex.
Jiren could still be a tough opponent in the 'vegito tournament of power fanfiction'. His power level is extremely high, and he has great combat skills. Even for Vegito, defeating Jiren would be no easy feat as Jiren has proven his strength time and again in the original tournament.
You can also make him have a unique role in the story. For instance, he could be the one to discover a new threat to the Earth before anyone else. He then has to convince the other Z - Fighters to take this threat seriously. This would put him in a leadership position and make him stand out more.
No. Abuse is never an appropriate topic, especially when it involves beloved characters from a popular series like Dragon Ball. It goes against the positive values that the series usually promotes.
In crossover fanfiction, Vegito Blue often brings a powerful and exciting element. His character combines the strengths of Goku and Vegeta in a unique way. For example, his combat skills and strategic thinking are enhanced due to the fusion. Writers can use him to create epic battles against various foes from different fictional universes.
One aspect of Vegito and Female Gogeta fanfiction could be the exploration of their unique power combinations. In these fanfictions, writers might create scenarios where they team up against a powerful enemy. For example, they could face a new, extremely strong villain that neither could defeat alone. Their combined strength and different fighting styles would make for an exciting story.
A popular Yamcha fanfiction is 'Yamcha's New Beginnings'. In this one, Yamcha decides to start anew after feeling left behind by his friends. He goes on a solo adventure, meets new allies and enemies, and in the process, he redefines himself and his place in the Dragon Ball universe. It gives a fresh perspective on his character.
Interesting strong Yamcha fanfics often give him new relationships or character dynamics. Like he could form an unexpected alliance with a former enemy, and through that, his character develops in new and exciting ways. Also, if the fanfic delves deeper into his backstory and uses that to fuel his new - found strength, it can be really engaging.
Some Yamcha fanfictions might center around his training. He could be training with different masters in these stories, or even discovering new techniques on his own to become stronger in the Dragon Ball universe.