Dungeons are becoming style over substance.

[Jirah]

While I believe that it was certainly part of the reason that ShB dungeons are all just the same dungeon with a different coat of paint, the same can't be said for Stormblood dungeons.

I had much more fun with stormblood than Shadowbringers.

Doma Castle has hazards, Castrum Albania has small DPS checks for speed, Kugane Castle has vital mobs that self destructed, Temple of the Fist has hazards and a DPS buster, Skalla had awareness mechanics that weren’t telegraphed, The Burn had hazards and Enfeeblments that were deadly, Ghimlyt had on-route mechanics like stacks and aoe circles. SHB has.........

Good music?

[Embry]

I've been playing this game for a long time, and the only dungeon that has ever been even close to challenging was the original Pharos Sirius (before nerf). For me, once I do a dungeon one or two times, I lose all interest in doing them because they're just so unstimulating. I hope they eventually change their design philosophy for them, but I highly doubt it at this point.

[Fland]

I had much more fun with stormblood than Shadowbringers.

Doma Castle has hazards, Castrum Albania has small DPS checks for speed, Kugane Castle has vital mobs that self destructed, Temple of the Fist has hazards and a DPS buster, Skalla had awareness mechanics that weren’t telegraphed, The Burn had hazards and Enfeeblments that were deadly, Ghimlyt had on-route mechanics like stacks and aoe circles. SHB has.........

Good music?

I mean... ShB dungeons have all those things too....
On top of my head:
Hazards: Mt. Gulg, Twinning
Small DPS check: Amaurot
Self-destruct enemies: Amaurot
DPS buster: Qitana Ravel, Grand Cosmos
Awareness mech that wasn't telegraphed: Dohn Meg, Qitana Ravel, Malikah's Well, Mt. Gulg, etc. (Actually most ShB dungeons have these mechs, the reason it's easier is because you already see how the trusts do them and follow where they go)
Dangerous debuff: Grand Cosmos
Moving mechs/AOE or continuous AOE: Holminster Switch, Malikah's Well, Mt. Gulg, Grand Cosmos, Pagl'than