Is it just coincidence and happenstance that where we meet Flemeth in the Fade, where we learn some truths, happens to be under a statue/carving of what may be Dirthamen, Keeper of Secrets?
What’s also interesting is that in this distant shot, Flemeth is kneeling with her head bowed. When the cut scene continues and we’re closer to the two, she is looking directly at Kieran, seemingly kneeling so as to have eye contact. But in that brief bit prior - is it reverence? Is it awe, or sorrow? Why would someone carrying the essence of Mythal bow before someone carrying the essence/soul of an Old God?
Which begs questions about the nature of the Old Gods. Were they unique entities, or do they hold some parallel to the Forgotten Ones? Or… what if their manifestation as dragons was somehow the doing of Mythal herself? Seven beings that were supposedly ‘trapped underground’ by the Maker, given wings and the gift of flight by a goddess (depicted with wings of her own) as a means of escaping their imprisonment. But as that was not enough to break their prison, or their slumber, leaving them vulnerable to the darkspawn and the Taint.
So releasing an Old God’s soul from its corrupted form would then be freeing the entity from a different sort of confinement. Perhaps not primarily so that the recipient of the essence could obtain power, but so that a certain justice is met and measured. Thus Flemeth’s plan for the Archdemon, and thus her desire to take Kieran with her - to right the wrong that was done to one of the seven, to give the soul wings again.
(always with the speculating…)