Also just these two verses from Drakon's prophecy make me think of what we are talking about.
Ok so here I thought of the past (imprisonment of the Evanuris by Solas) for (7) as I posted before and perhaps the future (ripping down the veil an dealing with the Evanuris). It's interesting that the Old Gods are also described as dreaming and the whispers in red lyrium say "we have found the dreams again" .
This could be a reference to having their dreams "devoured", which would mean (7) is a reference to the past.
(8) is what spoke to me as being Arlathan i.e. Arlathan was once situated where Haven is. Some speculated it referenced the destruction of Haven but I don't buy it.
It specifically says the "ninth sacred mountain" i.e. The frostback mountains (which rests The mortal dust of Our Lady i.e. Haven specifically) Ascended whole (intact, complete) into the heavens (into The Fade), to be given high honor (The Golden City) In the realm of dreams forever (also known as the eternal city by the Elvhen People).
Now, numbers 9, 10 and 11 at first made me think of the first blight i.e.
(9) And I looked up and saw the seven gates of the black city shatter (Magisters break into the Golden City, unleashing the darkness)
and Drakon's role in the second bight. (10 and 11)
However, given what we were talking about and my speculation about the Old Gods being guardians/seals/gates.
What if the parallels of the past are also future events (this is after all supposed to be a prophecy, fake or not).
then (9) could pertain to the 7 Old Gods i.e. they are the gates that were and will be shattered. Once all 7 are dead/destroyed, then darkness will cloak both realms. The Black City in The Fade, Darkspawn from the deep roads surfacing in the "unchanging world". I already thought of this (and people have already brought it up in a similar fashion), especially with Solas' plans to destroy the veil, but it hits me harder this time.
"Remember the fire, you must pass through it alone to be reforged anew."
Obviously (10) and (11) also describe Drakon's trials throughout the second blight and it's also an allegory for faith (just like the last test in Dragon Age: Origins in the temple of sacred ashes where we have to pass through the "cleansing" flames as a test of our faith and conviction in order to reach the ashes of Andraste and be "reborn anew") but the similarities are there for a reason (being a prophecy, assuming this was sent by a being like Mythal for example).
The fire is also a recurring theme as previous posts mention including my own. It's pretty interesting. I'm going to compile more stuff when I'm feeling less lazy 