I have three main characters in Origins. Thorin Aeducan is what I consider my canon character. He scoffs at any ideas of there being gods and honestly believes anyone who puts faith in what can't be seen are idiots. He openly mocks the chantry any chance he gets, and interrupts funerals by saying "may their ancestors accept them" according to Dwarven tradition. (He can do that at Redcliff after defending the village)
Then there is my human mage. Started off as an Andrastian, but his thirst for knowledge and history has led him to become skeptic about what the Chantry teaches, and eventually settles on a belief similar to Alistair's There is a Maker and historical fact, and then there's what the Chantry teaches. And they're quite often different. He also has mastered spirit magic, and sees templars capable of performing a lesser magic because all their abilities are essentially a weaker school of spirit. Only they can't animate the dead.
And finally my cousland. Hardcore Andrastian, believer in the Chantry. General goody-two shoes and a pain in the butt for Thorin (and me).
I find Sebastian's faith rather amusing - he is apparently waiting for the Maker to give him a sign as to what he should do, which is odd considering the Chantry teaches that the Maker no longer involves himself with mankind and will not do so untl there is a universal change of heart. Also can't understand why Maker didn't protect Elthina. I wonder if bomb sending Chantry sky high counts as a sign from the Maker?
I also find Sebastian an amusing character. And he's incredibly impusive. Switching priorities and what he wants on a whim. First with his parent's deaths, which make sense since he's the last of his line. Then when a desire demon tells him what he already knows about himself, and suddenly he's all "Oh know, I have been tempted by a demon! I must stay away from Starkhaven!"
As for Elthina....well her neutrality is both necessary and pointless in my opinion. It's necessary because she isn't a politician. She was raised in the Chantry from childhood. She's a priestess. Nothing more. I would hardly call her a great leader of people, more of a spiritual adviser to them as per her role.
But her neutrality is also pointless because she has direct command of Meredith. She appointed Meredith to the position of Knight-Commander, and if she payed attention to the people, had plenty of reason to remove Meredith entirely from Kirkwall. and replace her with someone more sane.
In fact, she has the obligation to do so as it becomes increasingly obvious that Meredith is not disciplining her own templars or enforcing the Chantries laws.
Did she deserve to get blown up? As a priest, no. As the leader of the militant arm of the Chantry, from a militaristic point of view that made her a prime target.
Which is why the Chantry shouldn't have an active military force and the templars need to serve the crown of their country.