dbz is about fighting
this is db super now which could expand out and become about more than fighting.
while one piece is inspired by dragon ball, it vastly outdoes dragonball in arc design. One piece allows most of the cast to have a big moment in every arc allowing even the weaker characters to feel important, and making the threat more than just BIG POWERFUL GUY NEEDS TO BE DEFEATED.
now I am not expecting db super to be a masterfully written story with radical changes from the dbz formula, but it would be great to see the arcs designed more where the other characters could be more useful rather than just being there to comment about how awesome goku or vegeta is. You could easily design a threat that involves the z fighters (will they still be called the z fighters?) to have to split into some groups and have each group do something important with a big vegeta fight right before the end of the arc which is of course ended with goku vs the big bad.
with this type of setting gohan could still regain his fighting form and become decently powerful, but instead could use his intelligence as a weapon as well and be less about brawling it out and more about figuring out how to stop the problem at hand and being able to brawl it out when need be.
like I said, I know this is unrealistic hope, I already know this series is going to be introduce big bad, goku gets beaten down, goku powers up, goku beats big bad, and repeat over and over again with next big bad, but one can dream right lol.