>>544594450
Nothing. Raditz served his purpose. Toriyama was right to kill him. He established that Saiyans are a thing, they are pricks, and Goku doesn't care about them even if they were to be his own brother because his real family is on the one on earth.
If you revive him he just kinda sits there and steals from Piccolo by bonding to Gohan or he does nothing. It'd be far more interesting (if you HAD to revive Raditz) if Raditz still worked under Freeza. You can squeeze a bit more drama that way if you have to.

Or you can have cute R&R with Launch and Raunch and tranny fusion with Trunks and future Raunch!!! It's so cute and wholesome and I love TFS and trannies!!!