http://na.finalfantasyxiv.com/stormblood/story/
Azim Steppe
This could be interesting to see if they actually include all 50 tribes for us to interact with. I can definitely see there being a reputation grind behind it in a similar manner to Zhloe. I'm hoping to see if we can unite the tribes against the Garleans or if we'll actually have to pick a faction to ally with, knowing SE we will probably have to unite them and/or fight against the ones that allied with the Garleans or choose to attack us.
It could also be used as a way to implement a new PVP mode or a new map.
Yanxia
A female viceroy occupying the castle? I wonder who that will be. Galvus' second in command maybe? Maybe a V or X ranked Garlean? Off topic from lore, the Doma theme from FF6 (a.k.a. cyan's theme) is actually my number one most favorite song in FF6, I REALLY want that to be the theme music of the castle. I'm predicting a 4 person dungeon where we'll fight her.
Ruby Sea
They call the place that runs it the Confederacy. Has that been in the lore anywhere before? Or is it a brand new faction? I'm sure Moose knows. :P
Susano
SE apparently really likes swordsman primals that live for the thrill of battle. Is that going to be a thing in every expansion now?
Kojin
They make me think of the Quadav due to the turtle like appearance. If I had to take a guess at the lore and the beast tribe quests we all know we're going to get, my initial guess is that Susano forces his followers to only worship him which would be considered a taboo or really bad to the ones that would instead choose to worship multiple deities. Primals don't like to share their followers after all.
Lakshmi
This will be interesting to see. Her description reminds me in some ways of Sophia, but rather than gilded chains she strikes me as a primal that genuinely wants to love and protect and nourish her followers even if that means stripping them of their free will so they have no choice but to surrender to that love and benevolence. Part of me doesn't actually want to kill her, I sort of want to see if we can come to some sort of neutral agreement with her in a similar vein to Ramuh.
Ananta
I'm not sure what to make of them aside from the fact that I believe they were created by the Allagans. Besides that I've got no theories as of yet.
Omega
I thought we'd fight it after it had been awakened but the fact it's called "Bend of Time" leads me to believe that we'll get some sort of storyline where we go back in the past and fight it or it has some sort of dimensional bending ability. I really hope it's not time travel related, we already got that with Alexander.
Samurai
Their lore entry leads me to believe what it will lead up to is Samurai that have been without a purpose finding a new one in training us and finally coming out to use their blade to keep the peace again. It could lead to a similar concept behind the Dark Knight story, i.e. men in power that think themselves untouchable being attacked by a pissed off vigilante with a big sword. They could even tie that to the Dark Knight job quests we get, it would be awesome.
Red Mage
Now THIS is what I've really been wanting to see and it's a great explanation. The black/white mages of Mhach and Ampador casting aside their differences to create a new magical art? Sounds badass, can't wait to learn more about that.
That's about it as far as the lore stuff goes. I'm really excited.