Draconic Transformation Reversal
Due to being descended from Thordan and his Knights, all Ishgardians are susceptible to the potential of draconic transformation by drinking dragon blood. Is there any way to reverse this transformation, either temporarily (i.e. change between forms) or permanently?
As a side question, does the type of dragon blood affect the transformation (i.e. would it be different to drink Wyvernblood versus, say, Vidofnir's blood, or would there be differences between people who drank from different Firstbrood lines - i.e. a difference in Niddhogg's blood versus Hraesvelgar's versus Vrtra's?
The Ixal, the Vanu Vanu, and Azys Lla
Thanks to the Fractal Continuum dungeons, we've learned that the Ixali were genetically engineered in Azys Lla. However, the Vanu Vanu have some recollection (very fearful in nature) of that place as well, and were keeping a key to bypass its barrier, indicating some form of history with it that makes it terrifying to them.
What was the Vanu's connection to Azys Lla? Were the Vanu Vanu taken to Azys Lla and used as experiments that created the Ixali? Were they created from the same program? Or is there something else going on.