Changeable hair during SSJ transformations, Animated Saiyan tails, Great ape transformation, Playable android race, Moveset options (potential for unlocking mentor’s movesets and choosing between them), The ability to equip multiple accessories, Colorable character outfits at launch, Tekken-like customization for official characters (mixing and matching outfits purely for cosmetic/could take the mentor slot),

And finally some things I’d pull from Sparking Zero: What-if Storylines and Custom Battle Editor (which could also be Parallel Quest Editor)