If you could have any crossover...

[ShamelessSellout]

Guilty Gear. The music alone would be a godly addition to the game.

[HumanNinjaToo]

GTA San Andreas

Lol, what? How so please?

Dissidia.
Make it a Permanent thing like MHW. Except, its a Raid leading up to fighting Chaos. And then we get Savage against Feral Chaos

I could see this being an actual thing! A dungeon where each floor/check-mark is a dissidia boss/boss from some FF title until Chaos, yes please!

[Mistyregions]

Vagrant story, it takes place in ivalice

[Anienai]

1. Doctor Who crossover mixed in with Chrono cross/trigger.
2. GoT (pre season 8)
3. Breaking Bad quest with alchemy.
4. Pirates of the Caribbean quests with Merlwyb Bloefhiswyn.
5. Cooking quest with Gordon Ramsey
6. Monk quests with Akuma from SF.
7. Bring back Maat.
8. Looooong obscure quest chain starting with saving a little girl selling flowers. (Tactics)
9. Quest chain with WHM trying to save Nariko. (Heavenly Sword)

[Insertcoins]

1. Doctor Who crossover mixed in with Chrono cross/trigger.
2. GoT (pre season 8)
3. Breaking Bad quest with alchemy.
4. Pirates of the Caribbean quests with Merlwyb Bloefhiswyn.
5. Cooking quest with Gordon Ramsey
6. Monk quests with Akuma from SF.
7. Bring back Maat.
8. Looooong obscure quest chain starting with saving a little girl selling flowers. (Tactics)
9. Quest chain with WHM trying to save Nariko. (Heavenly Sword)

Yes to Akuma with monk quest.

[grinkdaboy]

castlevania or world of warcraft

[MintnHoney]

Granado Espada
Because the uniqueness of the individual characters, mixed with the rich world and glorious fashions, could add a special touch in the XIV universe.

[Annoynymoose]

Breath of Fire IV. Because dragons.

[noxen]

castlevania or world of warcraft

Hah. The WoW one is never gonna happen. Ever. They're intimidated by XIV's success to even try.

Ontopic; Not so much a crossover but more of an event from an older game implimented into XIV.

FF9's Festival of the Hunt. Given the nature of the event in 9, it'd have to be instanced though. Otherwise there'd be no fair competition. But the scores at the end could be tallied up and shown on a leaderboard much like Triple Triad or Mahjong. I'unno, it'd be super neat to see something like that.

[Duskane]

Guilty Gear. The music alone would be a godly addition to the game.

yeah id love a guilty gear cross over
There is alot of weapons characters have that could work with jobs we have
like Sol bad guy and Gun breaker