For those who want the "vanilla+" experience. This keeps the original roster but adds:
: The Homebrew Channel is a must-have for installing mods. You'll need to use an exploit to install it. Tools like LetterBomb or the Bannerbomb exploit can be used, depending on your Wii's firmware. For those who want the "vanilla+" experience
: These are popular regional mod packs that often include unique character skins, fusions (like Goku and Vegeta SSJ Fusion), and Spanish voice acting. How to Install and Play Mods and UI Goku.
This is the gold standard of mods. It updates the roster to include Dragon Ball Super characters like Goku Black, Jiren, and UI Goku. For those who want the "vanilla+" experience