The Saiyans joining the Dragon Team could lead to a whole new set of adventures. Maybe they start exploring new planets together in search of the Dragon Balls. With the Saiyans' strength and the Dragon Team's knowledge, they could face off against powerful foes that neither could have defeated alone. For instance, they might encounter an evil race that has the ability to nullify ki attacks, but the combined efforts of the Saiyans' physical prowess and the Dragon Team's strategic thinking would help them overcome this threat.
One possible plot could be Raditz initially trying to take over the Dragon Team due to his Saiyan nature. But as he spends more time with them, he starts to understand their values of friendship and protection. He could then use his Saiyan strength to help the team in battles against stronger foes like the Red Ribbon Army or other villains.
The power levels would likely skyrocket. Saiyans are known for their natural fighting abilities and high power ceilings. Just having Goku and Vegeta on the team already makes a huge difference. If more Saiyans joined, their combined strength in battle would be formidable. They could easily take on stronger opponents that the Dragon Team previously struggled with.
Frieza could be a great antagonist. Since Raditz is now part of the Dragon Team, Frieza might see this as a threat and decide to target Earth. His powerful forces and his own desire for universal domination would put him in direct conflict with the Dragon Team and Raditz, who has a personal vendetta against Frieza for the oppression of the Saiyans.
Well, the plot might start with a trainer who is a bit of a rebel. They don't like following the normal rules of the Pokemon world. Team Rocket notices this and recruits them. As part of Team Rocket, they participate in raids on Pokemon Centers to steal medicine for their own Pokemon. However, during one of these raids, they encounter a very sick Pokemon that needs that medicine desperately. This makes them question Team Rocket's motives. They then start to secretly work against Team Rocket from within, trying to protect the Pokemon and the integrity of the Pokemon world.
Well, it could start with Sasuke approaching Naruto in a rather secretive way. He would lay out his plan about joining Team Hebi, highlighting the advantages. Naruto would be skeptical at first. He loves his friends in Konoha and doesn't want to abandon them. But Sasuke might argue that by being in Team Hebi, they can protect Konoha in a different way. As for the Team Hebi members, Suigetsu might be excited as he sees Naruto as a strong addition. Karin would be more cautious as she's worried about Naruto disrupting the group. Jugo might be indifferent at first. The fanfic could then focus on Naruto's journey of making this difficult decision, weighing his loyalty to Konoha against the potential of achieving more with Sasuke in Team Hebi.
In this fanfic, perhaps the Son family joins the Dragon Team to face a new, extremely powerful enemy. The Dragon Team has been struggling against this foe, and the Son family's addition gives them a new lease on hope. Goku's Super Saiyan forms could be combined with the Dragon Team's technology and strategies to create a more powerful defense and offense. For example, Bulma could come up with new gadgets that work better with Goku's power levels.
One possible plot could be that Gohan's wish brings back the Saiyans, but they return with their old warrior ways and have to adjust to the current state of Earth. There could be conflicts with Earth's inhabitants who are afraid of their power at first.
The plot might involve Sakura and Hinata being deceived into joining the Akatsuki. They initially believe they are joining a group that has good intentions. Once they realize the true nature of the Akatsuki, they have to decide whether to stay and try to change things or escape. Sakura's medical skills could be useful to the Akatsuki in treating their members, and Hinata's gentle nature might start to influence some of the more brash Akatsuki members.
Well, if Turles joins the Dragon Team in a fanfic, there could be a lot of chaos at first. He's not exactly known for his friendly nature. But perhaps he could learn from the good guys. Maybe he'd start to see the value in protecting the Earth instead of just causing destruction. He might have some epic battles alongside Goku and the others, and his power could be a great asset to the team. It could also lead to some interesting character development as he tries to fit in with the more morally upright Dragon Team.
Well, in such a fanfic, perhaps Team Hebi kidnaps Sakura to use her as a bargaining chip against Konoha. They might want to exchange her for some valuable information or a powerful jutsu scroll. Another possibility is that they think Sakura has some special knowledge about a certain power source that they are interested in.