One idea could be a crossover with the Dragon Ball Super universe and the DC Comics universe. Zamasu could team up with Darkseid, believing they share a similar view of bringing 'order' to their respective realms. Another idea is a crossover with the Naruto universe, where Zamasu tries to impose his will on the ninja world, facing off against powerful shinobi like Naruto and Sasuke. Or perhaps a crossover with the Star Wars universe, with Zamasu as a Sith - like figure, trying to gain control over the Force.
One interesting Zamasu fanfic could be about his origin story in more detail. It might explore his early days in the Kaioshin realm, his training, and how his ideology started to form.
Zamasu meets his end in the manga because he underestimates the strength and strategy of Goku and Vegeta. They exploit his weaknesses and deliver the final blow that finishes him off.
Fan Xian's strength was around the eighth rank. Although he had won the battle with Cheng Jushu easily, he had not surpassed the level of the Eighth Stage. In the battle before Fan Xian and Teng Zijing joined forces to deal with Cheng Jushu, his strength had increased. He also said that after that battle, his zhenqi had gone up another level. Fan Xian's hearing had not reached the level of the ninth-level ace Yan Xiaoyi, so he could deduce that his strength should be between the eighth and ninth-level. However, the specific level of the expert was not explicitly mentioned.
Fan Xian's strength was between the eighth and ninth ranks. Some documents believed that his strength had reached the Eighth Stage in Northern Qi, but he was no match for the ninth-level experts Yan Xiaoyi and Friar He. In addition, Fan Xian had won easily against Cheng Jushu, but he had not surpassed the eighth rank. However, after this battle, Fan Xian's strength had increased. Thus, it could be inferred that Fan Xian's strength should be between the eighth and ninth ranks.
Fan Xian's strength was above the eighth rank, but it was not explicitly mentioned whether he was eighth or ninth rank. Fan Xian's strength in Northern Qi should have reached the eighth level, but he was no match for the ninth-level aces Yan Xiaoyi and Friar He. When Fan Xian had first entered the eighth rank, he had almost been killed. Later, after experiencing many assassinations, his strength had improved. Combining this information, one could deduce that Fan Xian's strength was between the eighth and ninth ranks.
Fan Xian's strength was between the eighth and ninth ranks. Although it was still uncertain whether he was an eighth or ninth-level, Fan Xian displayed extraordinary strength in the play. It was as if he had barged into the Royal Palace at night and successfully dodged Yan Xiaoyi's arrow. However, Fan Xian's power might have an even more shocking side to the plot, so his martial arts level still needed to be observed. In summary, Fan Xian's strength should be between the eighth and ninth ranks.
Fan Xian's strength was between the eighth and ninth ranks. Whether it was an eighth or ninth-level was still uncertain, but Fan Xian had shown extraordinary strength in the play. It was as if he had barged into the Royal Palace at night and successfully dodged Yan Xiaoyi's arrow. However, Fan Xian's power might have an even more shocking side to the plot, so his martial arts level still needed to be observed.