Overall Dragonball in modern times is a storytelling relic of the past and a victim of its own success. The OG run ended at the right time and became the progenitor of modern action shounen.
Bringing it back for a nostalgia run every now and then with cool looking sakuga movies is fine and whatever but when you actually need to make a continuous ongoing story again like the old times it exposes just how ancient it is compared to its modern contemporaries.(and some of its rivals at the time but let's move on) From the character development to the power systems it can't compete anymore and it can't be allowed to change and evolve cause then it would stray too far from what people think of as classic Dragonball and the powers that be view that as a NO NO.
I don't think that is completely true when something like Ultra Instinct exists which isn't a power-up we have seen even in modern anime. There is reason why it caused CR to crash and is still beloved now, especially the anime form of it. It's a form while powerful is all about movement and the animation team flexing. As one Youtube put it, it was a form made for animation, while most forms were made with a manga in mind.
Super also did changed up the formate of Dragon Ball villains. Until Moro, none of them were evil for evil sake, or even evil since most of them were only against of the heroes because of the situation. Even the one truly evil villain, Zamasu, believed he was the hero of the story. While this isn't new most modern anime, this is a stark contrast to Dragon Ball who have well memorable, shallow villains. It also tone down the power scale of 'everyone villain is vastly more powerful than the last'. Beerus didn't get surpassed until arguably Jiren and Hit wasn't vastly stronger than Golden Frieza. Black started out fairly weak and had to climb in power and the same happened with Broly. Villains also didn't have transformations outside of Black nor did they have regen unless you count Future Zamasu's immorality.
It also gave far more power-breaking gimmick like the original Dragon Ball from Hit's Time-Skip, Dypso being the Flash, Merged Zamasu being a RPG boss and then becoming one with the multiverse, Future Zamasu being an immortal cheat code, magical girls, ect.
Super also did have a lot of character development, it just came from the extended cast, which is actually similar to what One Piece does. The main Straw Hats after their story arc is over don't really change. Like Nami for the most part is the same character she was after the Arlong Arc and that was over twenty years. I prefer it that way over force development like we saw with Gohan who kept relearning the same lessons outside of him finally dropping his smug super trait that bit him in the ass in the Cell and Buu Saga.
That and Super isn't really ancient compare to most of its contemporaries outside of One Piece, FMA, and HxH. Like MHA isn't light years ahead of Super in terms of story or even characters for that matter and Naruto ran into the same rapid power creep and wasted characters that Dragon Ball is accused of. And do we need to talk about Fairy Tail?
Super has made strives to be more creative, modernized, and Toriyama's original arcs are not just callbacks. Like, there is no Z counterpart of the TOP outside of it being a tournament. The issue comes when anyone other than Toriyama makes a story arc, which almost always end in a copy pasta Z or Toriyama's new ideas like Golden Cooler.
