ArcSys wouldn’t touch mechanics like Superdash because that would go against Bandai’s intentions for the game - to make it as casual friendly as possible, hence why the game has a “skip neutral” button (two of them, even). At best we could expect increases for startup and/or recovery and limited armor (i.e. can’t go through beams) but seeing how reluctant they were to do that… Yeah
They tried that. They nerfed Bardock a few times already, guy’s still a fucking beast. He’s just naturally a good character, like Johhny in Xrd. I don’t see how they could bring him and Kid Goku down without straight up cannibilizing both of them to near-unplayable status