That's arguable; I'm pretty sure that Maric and Loghain saw Ferelden as an occupied nation, despite Orlais ruling it for over a century. I'm sure some could have made similar arguments to yours - that Ferelden was simply part of Orlais, and not actually occupied.
The Orlesians sacked Denerim in 8:44 Blessed. Maric liberated Ferelden around the start of the Dragon Age. That's a 56 year occupation. Halamshiral Fell in 2:20 Glory. That's 720 years. There's no comparison. It took place within the span of a single generation in Ferelden. Also Denerim wasn't reduced to an uninhabited husk while the Ferelden's people were uprooted and scattered across the globe.
I'm not really contesting a desire to see more elves in general in the Dales, just that the elves of Orlais aren't really a nation anymore.
Elves already live in the Dales. Unless you're addressing my point about finally tackling the Eluvian plot with Merrill through Briala and her Orlesian Eluvian network - then I was speculating it from a standpoint of it taking place before the Orlesian civil war, not afterward. Especially given the possible presence of Red Templars rising up in Kirkwall (although the canon on Kirkwall around this time is muddled due to the conflicting accounts).
Well, you said "Andrastian Elves coming into the Dales." Also you suggested Merrill would be in charge of them. Merrill was helping the alienage elves of the Free Marches. If she was in Fairbanks' place, she would have led them directly into the path of the Orlesian Civil War. That's why it makes more sense that Fairbanks was a local.
The reason that Tevinter might have better knowledge that the southern Chantry is that their history may not have been tampered with as much. It states in World of Thedas 2 that the Emperor Drakon unified the various cults of Andraste in the south into one religion by means of conquest. Anyone who wouldn't conform to his idea of what the Chantry should be was wiped out. "Each clan had its own variety of the cult of Andraste, its own rituals, traditions and versions of Andraste's words. Young Drakon unified them by the sword." Then after Drakon we know that Divine's have cut bits out from the Chant that were no longer deemed politically expedient. It was the southern Divine who decided that the Canticle of Silence was political propaganda by Hessarian but if anything that may be closer to the truth than anything else, considering that Corypheus has confirmed he did go to the Golden City, his name means the Conductor and the diary of his servant confirmed that they did sacrifice a huge number of slaves to get there.
Seriously? You think the Tevinter Imperium is the one place that records history with political and theological integrity? The same place that interprets "Magic must serve man and never rule over him" as "Magic must rule man"? The place where religion is and always has been tied far more closely to the state than in the south? The place that Dorian says would refuse to believe they didn't conquer and destroy Arlathan?
What possible reason could there be to think that is the place that records the true history of Andraste? Dorian even admits that the only reason they think Andraste was a mage was because it makes them feel better to imagine she was one of them.
As for the location of the Valarian Fields, that is just a name on a map. Who is to say that Hessarian didn't shift the location further north to where Andraste was burnt rather than where she achieved her greatest victory. Why on earth would she return hundreds of miles down south after the battle? As the Chant suggests, if the battle had been fought there against the might of Tevinter, the way to Minrathous was wide open. At the very least she should have dug in for a siege. Instead we are to believe that she upped sticks with her army and travelled all the way back to her stronghold in Nevarra. That would have been giving the initiative back to Tevinter. Given we are told that Maferath was anxious about her being too eager to maintain her crusade, it doesn't fit with what is claimed about her. The Chant isn't consistent with the story about her being captured in her stronghold either. It says that she was close enough to Minrathous to look upon the Juggernaut golems that guarded its gates and saw they might have a problem against such defences, then went apart to seek the Maker's wisdom about what to do next and that Maferath suggested going into the hills to commune by a silver pool where it was said the Voice of Heaven could be heard most clearly. Nothing is said about heading back down south to her stronghold and travelling that distance isn't something you would do merely to talk with the Maker, particularly considering she claimed to be in constant communication with him. So the Chant version is the one that Drakon and the first Justinia favoured but would seem to bear little relation to the truth and any clans that had a version that was closer to actual events were forced to comply.
Because that's just sounds silly, and there's no evidence to suggest he ever did that. That doesn't even make sense really. Tevinter would never rewrite history to make themselves seem more vulnerable. Plus, if you think he did that, then why would Tevinter also be the place that doesn't change history to sound politically expedient?
World of Thedas 1 says "Together, Maferath and Andraste carved a path into the very heart of the Imperium: the capital, Minrathous. West of the city, in the Valarian Fields they won a hard-fought victory" and later "The Imperium forces caught up with Andraste as she traveled to a stronghold in Nevarra."
Even in World of Thedas 2 there is zero indicator that the Battle of the Valarians Fields was anywhere other than where the Valarian Fields are on the map. In fact, given the paragraph's author is very skeptical of Andraste's chances of victory, you'd think something like the Valarian Fields being in a completely different place than the Chantry remembers would have been mentioned once.
It also says "The closer she came to the heart of the Empire, the more she fought the enemy on its home ground."