Raditz could be redeemed by sacrificing himself for the greater good. For example, if there was a powerful enemy threatening the Earth and he steps in to take a fatal blow meant for someone else, like Gohan or Goku.
One great 'Dragon Ball Super Raditz fanfic' is 'The Redemption of Raditz'. It shows Raditz in a new light, exploring his character more deeply than the original series.
The fact that Raditz is a relatively under - explored character in the official Dragon Ball series. Fanfics allow us to see more of his backstory, his potential, and his possible relationships with other characters.
If Raditz survived in fanfiction, he would likely have a complex relationship with Goku. He might start to see the value in Goku's way of life. Goku could try to reform him, and Raditz could slowly become a more positive force in the Dragon Ball Z universe.
One great fanfiction could be 'Raditz's Redemption'. It shows Raditz in a different light, exploring his potential for good. The author gives him a more complex personality, not just the one - dimensional villain he was in the original. Another interesting one is 'Raditz Among Friends' where he forms unexpected alliances and learns about friendship, which is a far cry from his solitary and aggressive nature in the series.
Maybe Raditz gets sent to an alternate universe in Dragon Ball Super. There, he meets different versions of the Z - fighters. He has to team up with them to fight a common enemy that is threatening both universes. This would allow for some cool battles and character development for Raditz as he learns from these new allies.
I'm not entirely sure as I haven't read it fully, but generally, it might involve new heroes and villains in the Dragon Ball universe, with epic battles and power - ups for the characters.
In a good Raditz fanfiction, the author should take advantage of Raditz's unique abilities and status as a Saiyan. They could explore how he could use his powers for good instead of just destruction. The story should also have a consistent tone, whether it's more comical or serious, and should have well - written interactions with other Dragon Ball characters to really bring the story to life.
Well, one possible fanfic could be about Android 18 and Raditz teaming up against a common enemy. Maybe they initially start off as reluctant allies, but as they fight side by side, they begin to respect each other's strength.