So the first Void Ark is not from any FF game, but from the ending cutscenes after defeating Echidna, we see Diabolos and the coffin with the Queens of the Voidsent descending into the Voidsent realm. Is there any possibility the next zone might be The Jade Passage from FF2? In FF2, the Jade Passage was a dungeon that connected Earth to Hell and where all the demons lived. The third and final Void Ark zone could be the palace/capital of the voidsent - Castle Pandaemonium, or just Pandaemonium. Pandaemonium was the final area in FF2, and referenced in FF9. It was the castle of Hell where the demon king lived. I think it would fit in perfectly with FFXIV's canon, considering CT was based off of FF3's final dungeon.

The final boss could be Mateus, and sub-bosses could include Astaroth, Beelzebub, Borghen. Even the theme of Pandaemonium sounds like it would be epic enough to be raid music like World of Darkness/Syrcus Tower was.


https://www.youtube.com/watch?v=GC3ZpHNY0-o