No idea. I tried fixing it in an edit, and only made it worse.
True, but is far less justifiable if you didn't sell your cousin to Vaughn and took all the blame to turn yourself in before your conscription.
And that policy removes a great deal of the motive they would have to start a war with humans. No matter how the Chantry spins it, or what rumors persist about the Dalish, no one in the game has ever addressed this issue. Which leads me to believe that the Chantry either doesn't know and simply doesn't care to learn the elven perspective, or that information has been lost to time and the fires of the war.
Orais is most definitely racist, there is no doubt about it. They practice slavery like Tevinter does, but they call it a different name to make themselves feel better about it. Leliana and a Dalish warden can discuss it, and Leliana doesn't actually deny that elves are slaves, or that Val Reayeaux's alienage is considered the worst one in all of Thedas. The chantry actively teaches against anyone who is of a different belief is a heathen. And I don't see any reason why the Canticle of Shartan had to be removed from the Chant of Light after the war with the Dales.
That's probably my biggest problem with the Chantry (and the dwarves memories) is that they pick and choose which scriptures they wish to believe in that matches their interpretations. If they really cared about the true word of the Maker, there wouldn't be Dissonant Verses like the Canticle of Shartan or Maferath.
As for Orlais not caring? I don't see why they wouldn't care. After the war, the Chantry declared that elves had to convert and live in alienages, the canticle of shartan is removed from the Chant, and they completely destroy elven culture. If it were revealed that they did something reprehensible, they would lose legitimacy for these actions taken by them, and the Chantry founded by them.
That's pretty weird.
Regardless of if you took all the blame, you are still the cause for (at the very least) the slaughter of a dozen + city guards. If that was allowed, other elves might get the same idea. They cannot punish the perpetrator directly because of Duncan, so they take it out on the rest of the oppressed (which they do even if they get to kill the CE).
The elven perspective, at this point, almost doesn't matter unless there are writings from that ten year period. Their oral history is an awful source and would vary from storyteller to storyteller, and no one in Thedas cares. The storytellers most likely wouldn't want to tell humans or city elves (much less be hospitable enough to allow them onto wherever the Dalish have parked), and no one has a long enough life to track down every Dalish tribe across Thedas. And, even if someone managed to visit every storyteller & write a codex comparing the various themes and consistencies in the stories, it would almost certainly have been a Chantry Scholar (Brother/Sister), which would lead to "hurr, codex written by chantry, chantry bad, codex propaganda". You know this to be true.
Indentured servitude is different; if the elves are never paid, never released from service after their contract is up, or put into a situation where they must immediately become another indentured servant, I would agree that is slavery. I don't recall Leliana mentioning it. Why would your Warden even talk to her? She's a filthy shem.
The Canticle was removed because Shartan's descendants decided to drink the kool aid and go cray-cray. I assume it wasn't restored because of Orlais; it would encourage regifting land to the broken elves, and when the Chantry had gone ahead and exerted its pressure to not have them all killed - you can only go so far. Why it wasn't done afterwards? Well, I imagine that the Dales were settled, so bringing it back would cause the same discussion here; the mass exodus of people to somewhere. As for the Dissonant Verses, eh, it isn't like they're a secret; they're still taught and there's no gag order on them. You can go up to random sisters on the street and talk to them about it, and they'd be more than happy to answer your questions.
Because no one cares at all about the elves except to get those filthy band of savages away from human lands. You might find it reprehensible, but no one in Thedas would. The worst that would happen would be some alienage riots need to be put down. Which Ferelden has showed us is very, very easy. ~_^