One interesting 'Dragon Ball Z Human Fanfic' story could be about a human character who discovers they have latent Saiyan powers through some strange genetic quirk. They then have to learn to control these powers while dealing with the normal human world around them.
There are fanfics where human characters form a special team to assist the Z - fighters. These humans, using their unique skills and intelligence, find ways to contribute in battles against powerful foes. For example, they might develop new strategies or technologies that give the good guys an edge. It's really fascinating to see how these regular humans interact with the super - powered Saiyans and other aliens in the Dragon Ball Z universe.
One interesting fanfiction could be about a human character discovering a new form of power that is unique to humans, not Saiyan-based. For example, a story where a human martial artist figures out how to tap into the latent spiritual energy within all humans to achieve a power level that can rival the Saiyans.
One interesting crossover could be a battle between Hulk's brute strength and Goku's Super Saiyan power. Maybe in the fanfic, they start off as rivals, with Hulk misunderstanding Goku as a threat to Earth. Their fight would be epic, with Hulk's limitless rage against Goku's increasing power levels. It could also explore how their different universes' power systems interact.
Well, the concept of the announcer as a character in the fanfic can bring a lot to the table. They could be a source of humor, like making funny remarks about the characters' hairstyles or the strange names of their attacks. Also, they might have a backstory that ties them into the Dragon Ball Z universe in an unexpected way, perhaps having some connection to the Kais or other powerful beings.
One idea could be Shaggy getting transported to the Dragon Ball Z universe and accidentally eating a Senzu bean, which gives him superhuman strength and he has to figure out how to control it. Another could be Shaggy befriending Goku and teaching him some of his laid - back ways while Goku teaches Shaggy how to fight.
One idea could be a crossover where the characters from RWBY and Dragon Ball Z have to team up to fight a common enemy. For example, the Grimm from RWBY could be combined with some of the villains from Dragon Ball Z, like Frieza. The RWBY characters could learn some of the ki techniques from Dragon Ball Z, and in return, the Dragon Ball Z characters could learn about the unique Dust powers in RWBY.
There are fanfics where the Dragon Balls are introduced into the Naruto universe. This could lead to all sorts of chaos. Naruto and his friends might be on a quest to gather the Dragon Balls for a noble cause, like bringing back a fallen comrade. At the same time, the villains from Dragon Ball Z could be tempted by the power of the tailed beasts in the Naruto world. It would be a really exciting mix of two great anime universes.
One interesting concept could be crossovers between the two universes. For example, seeing Goku from Dragon Ball Z interact with Ichigo from Bleach. Maybe they could have a friendly sparring match to test each other's powers. Another concept might be the combination of different power - up systems. How would the Saiyan transformation mix with the Hollowfication or Bankai in Bleach?
One interesting aspect could be the unique interpretations of Arlian characters in the Dragon Ball Z universe. Maybe it explores their backstories in a different way than the original series.
There are no such inappropriate 'Straight Shota' stories in the official Dragon Ball Z canon. Dragon Ball Z mainly focuses on epic battles, power-ups, and the adventures of Goku and his friends to protect the Earth from various villains.
The main interesting part is the exploration of different relationships. In Dragon Ball Z, most of the focus is on the male characters and their battles. But in yuri fanfics, we get to see female characters in new lights, their friendships and possible romantic relationships.