Out of these sets of Dragon Balls, which one was the most interesting addition to the franchise?

[Super-Shenron]

Might as well put up a quick reminder for the question's sake:

GT introduced the Black Star Dragon Balls.

Super introduced Super Dragon Balls.

Super (manga) introduced the Cerealian Dragon Balls.

Daima introduced the Demon Realm Dragon Balls.

[Vegeta th3 4th]

Daima's come in first due to how unique they were to collect, requiring both strength and strategy to win over from the Tamagami.

Dragon Ball GT's are a close second due to how impactful they were to the story. Goku was permanently turned into a kid, the earth blew up due to Baby using them, and Piccolo was sacrificed to deactivate them.

Both sets in Super are equally pointless.

[SSGpotota]

The Cerealian Dragon Balls. I think a set of Dragon Balls which are more powerful, easier to find, with no cooldown, but require a cost to grant a wish is very interesting, however it doesn't get explored enough due to them being used for the same wish twice.

[AliTheZombie13]

Black Star DBs.

I don't really feel it with Super's/Daima's.
With each of these new sets, we get the promise of "More Powerful Dragon Balls" that really don't do anything new.

Make people immortal? Original Shen Long already did it.
Make people stronger? Original Shen Long already did it.
Resurrect people? Original Shen Long already did it.

The hunts behind them are also quite uneventful.
Daima's entire excuse for existing is "Oh, but these have powerful guardians behind them."
Yeah, but the "powerful guardians" turn out to be weak cannon fodder, so...

At least GT's gave the story some well-needed stakes and twists, but I'd struggle to even call them that much of an interesting addition to the franchise.

Black Star DBs -> Cerealian/Super DBs -> Demon Realm DBs.

[Koitsukai]

- Hands down, the Cerelian DBs.
A 2-set with no cooldown, and sort of a monkey-paw dragon. One that walks you through the wish, like it's trying to fuck you over or sell you something. This set is the most broken of the entire franchise.
They are too fishy to not be the most interesting addition. Too bad, Toyo didn't care to expand on them at all.

- The Daima's are a 3-set and a quite a powerful dragon, finger-flicking a Daimao wearing the Tertian Eye. Having guardians sets them apart, as well. And also the mental games that follow. Sure, I doubt people like Babidi, Elecc, Zamasu, Baby or Freeza would comply with that instead of just killing the Tamagami. So, it's more like a formality rather than an actual fail-safe.
Without that, they are just regular DBs. I'd place them as #1 if the cerelians weren't so broken.

-The Super Dragon Balls are just stronger magic orbs. They are just bigger and stronger. It's the "punch them harder" meme but in dragon form. Boring as they could possible be.

-The Black DBs.
They don't even make sense, not even the scattering is logical, it's the most interesting in terms of who the fuck came up with such a flawed McGuffin.

[ABED]

The Namekian DBs. Every other new set has been diminishing returns.

That said, the Super DB dragon is such a cool idea. with each DB being as big of a planet, to be perceptible to regular size beings, the user has to go into a pocket dimension just to communicate with it.

[Yuji]

Both the Cerelian and Super Dragon Balls are cool concepts that unfortunately aren't really used to their fullest extent.

The demon realm dragon balls are the worst in concept but the execution was almost flawless, they did the best they could with an unoriginal dragon ball set.

The black star dragon balls are cool in theory (destroy the planet they're used on) but your suspension of disbelief fails when you think about them for more than 5 seconds.

[SupremeKai25]

The Super Dragon Balls. I love that they're planet sized and scattered across two universes. in fact, setting an entire arc ON the crust of an inactive Dragon Ball is the coolest thing anyone's ever done with these orbs.

I also love Super Shenron. He's truly a force of nature; In his debut, he swallow whole galaxies for fun. Just pure cosmic force of nature.

[Hellspawn28]

Probably the Demon World and Super Dragon Balls. The Black Star Dragon Balls are a huge plot hole that makes my heard hurt every time when I think about GT.

[FinalForumPodcast]

From a story-telling perspective, it's gotta be the Black Star balls. Sure, there's not much sense in them, but Dragon Balls whose use has a consequence is an interesting idea.

From a gathering perspective, it probably is Daima's. It's a fulfillment of the promise of the Namekian Dragon Balls from way back when that idea was first introduced...Frieza says at one point that the village elder wouldn't give him the ball and blathered on about needing to prove his worth and he even offered to take the test but was not allowed. We never got to see that sort of "you must earn this" thing from those like we were told is the standard. I have a lot of issues with Daima but the Tamagamis are not one of them.

From a "wait...wtf...how is this even supposed to work at all?" perspective, it's the Super Dragon Balls. They're scattered across two universes? How is anyone supposed to even collect them?

The Cerulean Dragon Balls work in their story, and they provide for some interesting developments, but unto themselves, they're just other Dragon Balls.