Well with 2 Hard mode Dungeons per major update eventually they may reach this point since this story dungeon has the potential to have a Hard Mode version.
Most likely it will have...
1) a new path that goes deeper into a underground the research lab in Praetorium that survived Ultima's attack. During the path to Ultima you will notice in the underground lab there are several blocked paths that would lead to other parts of the research lab.
2) Fight experimental magitek which introduce proto versions of future Main Story bosses and enemies.
3) 1st Final Boss: Proto-Ultima Weapon.
4) 2nd Final Boss: Number 128
5) Theme is remix version fo FFVI Magitek Research Facility
http://www.youtube.com/watch?v=J7DvsG5U25A
Reason for being there, lore wise, is to discover any data that remains in Praetorium and what kind of Allagan knowledge did Gaius obtained from Lahabrea.
It may introduce old FF enemies such as..
Chaser
http://static3.wikia.nocookie.net/__...r-ffvi-gba.png
Magitek Armor
http://static3.wikia.nocookie.net/__...r-ffvi-gba.png
Proto Armor
http://static1.wikia.nocookie.net/__...r-ffvi-gba.png
Trapper
http://static4.wikia.nocookie.net/__...r-ffvi-gba.png
Number 024 (1st boss)
http://static1.wikia.nocookie.net/__...4-ffvi-gba.png
Number 128 (Last Boss after Proto-Ultima)
http://static4.wikia.nocookie.net/__...Number_128.png
So what do you think will be in Praetorium (Hard) if they introduce this place as a new 8 member dungeon.
