Dragon Ball into action games.
I know there have been some examples of this but big Dragon Ball games tend to stick to the fighting genre. I'd love to see one that's pure action with Platinum style combat, moving through levels with some light exploration, unique bosses, etc
Also Naruto into an action/adventure franchise
Go back to the core idea behind the Ubisoft Naruto games but improve on the gameplay. Make combat more like an action game instead of a shitty fighter, add some prince of persia inspired platforming and double down on the light puzzle aspect of combining the powers of various characters to move past some obstacles.