Actually what I found interesting with Cole is that his story suggests a demon may become a spirit again, if it regains it's true purpose. I am referencing here Cole's story when he was originally discovered by the templars, Rhys and Evangeline.
Did anyone else also understood his story this way?
You know what's funny? I actually just realized that I didn't notice a difference between the Void and the Fade during my DA:O playthrough: I was playing in my native language (Polish) and both words were translated the same way. So just until now the Void and the Fade have been the same things to me. But it's obvious now that these are different places.
Now I re-read the description of Anvil of the Void mission and the Fade description on DA wiki and these are the speculations I came up with:
- the existing (real) world is Fade+Thedas, separated by the Veil. One is reflection of another and both are shaped by each other (Fade is shaped from dreams, nightmares and all kinds of emotions of Thedas; many spirits/demons are attracted to Thedas and can change it by their actions, for example by possessing a mage). So they are like 2 sides of the same coin or maybe a better comparison: an object and it's mirror reflection. Relation between Fade and Thedas: reciprocity.
- the real world is placed in the Void which is a non-world (I'll explain this soon), however it seems there is some connection between the Void and the blood. Caridin creates golems in his Anvil of the Void by using blood magic and not by binding spirits into golems, so it seems the Void has possibility to create/transform but only the material beings and not spirits?
Relation between Void and real world: opposition.
Why do I speculate the Void is a non-world? Again by reading the legend of Mythal as Great Protector codex entry, particularly this part:
And that night, when the sun had gone to sleep, Mythal gathered the glowing earth around his bed, and formed it into a sphere to be placed in the sky, a pale reflection of the sun's true glory.
I envision the "sphere placed in the sky" as the real world (Fade+Thedas) while the sky here is the Void. I just don't understand if it's the sky which is "a pale reflection of the sun's true glory"? Does this means again that everything potentially destructive in the world of Thedas comes from the Sun, in opposition to the Earth?
I had just 1 Cousland, only because of curiosity, hunger of royal power and possibility of making Alistair happy at the same time (still dumping him with Zevran though
). But my real babies are Mrs Mahariels in few playthroughs, including the very first DA:O one! 
I have this bizarre fixation with the Polish language for being completely incomprehensible to me besides the odd word I've learned from The Witcher.
It just sounds so interesting. And the pronunciation guides for English-speakers are a hoot.
'Pravda' is a Polish word, right? It means something like 'Okay,' Or 'Alright, I'll slay the draug for you'? 
Anyways, ignoring my general fascination with all things Slavic, I think the specific line about the 'pale reflection of the sun's glory' sounds a lot like your typical description of the moon. It could certainly be what you say, and I like your ideas. I'm just too tired to really add to them at the moment. 
Colonel: I think you and I have the opposite in personality.
My friends have said that I would look intimidating, with the beard and height and furry brows and all, if I was silent. Because, "Well, you kinda sound like a gay British schoolboy."
When I asked my SO about that, she protested, "You sound more Canadian than anything! Those jerks!" 
And generally speaking, I get sick to my stomach whenever animals are hurt, I've cried at documentaries of genocides and racial and religious oppression, (and the Library of Alexandria burning down.) and I'm much more inclined to sit around and read and play games than do any physical activity, much less 'sport'. And I am entirely too polite for my own good most of the time. I've never been able to turn down a telemarketer without wishing them a happy day, or chatting with the Mormon missionaries at my door about mutual friends and how their passports are coming along.
The 'debate' portion of our old Government and History classes introduced them all to a very different side of me. If I raised my head from my map sketches at someone's comment on a hot topic and raised a hand, everyone got really nervous. 
So, along with other reasons, I saw many similarities between Solas and I, especially when I contrasted his gentle view on spirits and his very critical, hot-blooded arguments about the Qun. (It's not narcissistic, romancing the characater that I most identify with, if I also romance Dorian and Cassandra almost as much, is it?
)
All of this information was for the benefit of our forum creeper, Flabbadence, of course. 