Again, The Calling is very specific language. Why would the word suddenly be referring to something else after the concept is drilled into out heads over and over again during Here Lies the Abyss? You can't just decide what people "actually" meant when they say something.
It's too specific though. The Calling is what you hear when the taint starts to take over. If they were referring to the taint taking over then they would have referred to the taint, not the Calling.
What you believe does not stand up to the information presented thus far. As for Avernus' research it is just that: research.
But his research already found a way to live for ages with the taint. So a prevention of the Calling has already been discovered. As I wrote, if that is all the Hero is after then Avernus' research should be enough.
Avernus made significant breakthroughs but he had yet to accomplish his goal of unlocking the power of the Taint and manipulating it as he made clear in his letters to the Warden and the First Warden. The Warden's quest to cure the Calling is still ongoing as they said themselves in the letter.
Yeah. I know that. My point was about blocking the spread of the taint and preventing the Calling. Avernus already discovered how to do both. What he was researching after that was how to bring out the full potential locked within the taint. That has nothing to do with what he's already discovered.
How exactly are the events related to Avernus, Fiona and The Architect not related to the quest to cure the Calling??? These are the events that inspired the quest in the first place. Morrigan herself ties them all together in a nice little box as the story-line inches forward. Before these events no one knew that it was possible to manipulate or cure the Taint at all. That is the very definition of Foreshadowing.
I think you're starting to mix things up here. I was replying only to the information mentioned in Awakening and 2, not in The Calling or the Soldiers Peak DLC. The info with the Architect in Awakening and the info in the letter in DA2 have nothing to do with the Hero's quest to find a cure. That all has to do with the nature of the taint and the mysterious implications Avernus found therein. My argument is that Avernus can research unlocking the power of the taint all he wants, but that doesn't mean the Hero can't also look for a cure for the taint. Avernus' path has nothing to do with the Hero's. That's why it isn't relevant to the discussion about the cure. If the Hero only wanted to stop the spread of the taint and prevent the Calling, then he should be working closely with Avernus right now, not chasing down a lead in the far west that may be fruitless.
Now, regarding the Architect and Fiona in The Calling, and Avernus' long lifespan in the DLC, yes that is related to the Hero's quest to find a cure. I never wrote otherwise. As for what inspired the quest in the first place, it might not be those events. Morrigan mentions those things, but that may not have been the basis for the quest. Simply knowing that it's possible means nothing. The Hero would need a lead in order to leave for the far west. I think Morrigan found something else regarding the far west and just happened to learn about Fiona later. Avernus she already knew about.
The Hero straight up tells the Inquisitor that Wardens are connected to the Blight.
But he doesn't write
how they are connected.
There is no mincing of words or trying to hide anything. The letter is sent after Here Lies The Abyss where the Inquisitor learns by necessity the details behind the connection between Wardens and the Blight. At this point the Inquisitor know everything and there is nothing to hide.
Irrelevant. The Hero doesn't know of the events at Adamant. The Hero doesn't know what the Inquisitor knows or doesn't know.
The Warden him/herself refers to the Calling as we both know it to be: The specific point in which the Taint begins to kill the Warden.
I disagree. The reference could easily mean that he wishes to cure the taint, rather than have it lead him to his Calling, as in the actual journey into the Deep Roads.
Morrigan was plainly talking about halting the spread of the Taint:
"My love is on a quest to combat the Calling, the actual calling that signals the end of a Warden's life." - Morrigan
Here she uses the specific language "The Calling", and it's meaning that we have both agreed upon "signals the end of a Warden's life". No, she didn't use the specific words you want but it has already been well established by multiple characters and sources that I have provided you that stopping the Calling is stopping the Taint from spreading to the point in which it kills.
I don't think you have proved that. That is your interpretation. I have a different one. Again, I won't say yours is impossible, but my problem with that is 1. A way to prevent the Calling already exists through Avernus. 2. The Calling does not kill the Warden, the taint does. So curing the taint is the logical goal. And combating the Calling can be done by curing the taint.