The sixth zone in 5.0

[Cilia]

If I remember correctly, there is only going to be one Job Quest at Lv80 (though it'll be longer than usual); the rest will be filled by "Role Quests." One reason for this was because bouncing back and forth between the Source and the First every few levels would feel incredibly disjointed and break up the pace of the story. (The other ostensibly being to reduce the load on the writing team.)

Me? Well, I'd like a really eldritch place as the sixth zone; something like IX's Memoria, the innards of Sin from X, or XI's Al'Taieu or Promyvion areas. Given how little we actually know or understand about the central conflict between Zodiark and Hydaelyn I'd very much like a Memoria-type dungeon / area over the others, as not only would it be really cool but it could be used to neatly explain a lot of those missing details.

... assuming there even is a sixth zone.

[Daralii]

If I remember correctly, there is only going to be one Job Quest at Lv80 (though it'll be longer than usual); the rest will be filled by "Role Quests." One reason for this was because bouncing back and forth between the Source and the First every few levels would feel incredibly disjointed and break up the pace of the story. (The other ostensibly being to reduce the load on the writing team.)

Me? Well, I'd like a really eldritch place as the sixth zone; something like IX's Memoria, the innards of Sin from X, or XI's Al'Taieu or Promyvion areas. Given how little we actually know or understand about the central conflict between Zodiark and Hydaelyn I'd very much like a Memoria-type dungeon / area over the others, as not only would it be really cool but it could be used to neatly explain a lot of those missing details.

... assuming there even is a sixth zone.

I think datamining confirmed that there are six. They generally start editing the internal tables at some point during the X.5 patch, which is how we found about out the Hrothgar in advance.

I'm definitely expecting something that feels like a Rise of the Zilart or Chains of Promathia zone just because Rak'tika and Il Mheg feel so similar to Zi'Tah and Al'Taieu respectively, but I also wouldn't be surprised if it's somewhere out in The Empty(if only because it's mentioned in Eden's description), something like Ultimecia's Castle, or even something based on Nova Chrysalia. There are elements of a lot of other FF games in what they've shown, and with the story being as much of an enigma as it is, it could end up going in any number of different directions.