If you want, you can take a peak at some of my homebrew and steal/draw inspiration
Probably not the right place to bring it up, but
Saiyans have had Super Saiyan removed completely, the more recent (but not quite new)
version lacks Super Saiyanjin 4 transformation, though the saving throws against exhaustion are just as impossible as the original's, which made the Truenamer's Skill Checks appear easy. I still fancy running a game for an entire party abusing Super Saiyanjin, not a serious one mind you.
If you decide to bring back Super Saiyanjin 4 transformation, would you for the sake of accuracy, allow characters to skip Golden Oozeru after the first successful transformation, or is Golden Oozeru forever a requirement?