Would You Be Interested In A Deep Dungeon Game?

[Enkidoh]

I just remembered pretty much what the OP is asking for is actually already in the game (at least a limited version) - a past Rising event added a minigame called 'The Cheap Dungeon' which took the form of a side-on dungeon crawler where you had to fight 'bugs' in the 'system' (as in, bugs in the game, that took the form of Allagan mimics), and there was in-jokes from development team members complaining about their workload and how they'd look at the rest after their lunch break for instance. And it was all put to a fitting chiptune rendition of Order Yet Undeciphered, literally titled Wizardly.

I'm not sure if it's still unlockable by players who didn't do the event, but for those that were playing at the time it's still accessable through the Toy Box in Inn Rooms or via that furnishing in FC housing/personal housing/apartments.

[Lyth]

If Square Enix released a Final Fantasy game about exploring a massive Deep Dungeon with hundreds of floors would people enjoy it?

What you're looking for is a dungeon Roguelite. There's a lot of variation around what actually constitutes a Roguelite, but they often have elements of procedurally designed dungeons that reset on death/escape, and can give you permanent upgrades that you can carry over to your next run (which is what the aetherpool system does). As was pointed out earlier, you could say that Rogue was to the Mystery Dungeon series of games in Japan as Wizardry/Dungeons and Dragons was to Dragon Quest. Lufia II's Ancient Cave also was from that era, and featured an extra game mode where you could run the 99 floor dungeon with any party from the main game (if you escape back to the entrance, you only could keep items from special blue treasure chests, resetting everything else). I never played Azure Dreams, but I've heard that it feels very similar to Lufia II's Ancient Cave. You could argue that Persona 3's Tartarus is a softer example of this, replacing a hard reset with time constraints on your tower climb (The Reaper would make a great conceptual addition to a Deep Dungeon climb, though).

While there's a community within FFXIV that enjoys Deep Dungeon content, it probably isn't enough to 'extract' that element out to make a standalone game. The genre is fairly saturated nowadays, probably just behind Metroidvania for indie game dev popularity, and you need to do something particularly innovative to succeed. I think an equally useful question is to ask what lessons we could draw from all these other games to improve on the current Deep Dungeon experience?

What I'd personally like to see is something based around Nym. Instead of using a temporary levelling system, perhaps have players collect and spend a temporary resource on every run, like lamp oil, to activate devices, shut off floor debuffs (imagine a floor without any light) and obtain power-ups. Perhaps use something like the blue chest system mentioned earlier for permanent upgrades that can be used on subsequent runs. Add in a Tonberry Stalker to chase you off the level when you take too long. I like EO's introduction of optional boss mobs that provide temporary boosts. Each iteration should add something extra on top of the last.

[GoatOfWar]

The problem with deep dungeons is that they become very repetitive, very quickly.
So, no.. Not really.. Maybe if they implemented features from WoW's M+ to shake things up.

[RitsukoSonoda]

I would rather have a new Chocobo's Mystery Dungeon game... >.>