But why does she believe it? What is her belief based on? What are her justifications, her theological foundations, her answers to the ways her claims contradict established canon? There's zero intellectual examination or questioning that we can see, it's all about what does or does not give her the warm fuzzies. And, again, I don't care whose ideas are nicer or would make for a happier world. You don't need a religion for that, but when you are a follower of a religion, you don't just get to change its teachings based on nothing more than your personal whims.
What it boils down to is that I'd like to see reasons for why Leliana is actually a believer in and suitable religious authority on this god called "the Maker" instead of say the Invisible Pink Unicorn or the Flying Spaghetti Monster.
Why? Her belief is based on the Chant.
And no longer was it formless, ever-changing,
But held fast, immutable,
With Words for heaven and for earth, sea and sky.
At last did the Maker
From the living world
Make men. Immutable, as the substance of the earth,
With souls made of dream and idea, hope and fear,
Endless possibilities.
Then the Maker said:
To you, my second-born, I grant this gift:
In your heart shall burn
An unquenchable flame
All-consuming, and never satisfied.
From the Fade I crafted you,
And to the Fade you shall return
Each night in dreams
That you may always remember me
In Dragon Age: Origins, she states that the Makers "speaks to her" in her dreams. Usually it might sound strange and we all assumed she may be lying but she survives being killed by the Warden, the same spirit who saved the Inquisitor knows Leliana by name, she has an incredible tolerance to the blight, Perhaps she is the Maker's agent, how does one know? How can you dispute something that cannot be proven? andraste herself according the codex examination of the Wrath of heaven chant, started the same way
Those who oppose Thee
Shall know the wrath of heaven.
Field and forest shall burn,
The seas shall rise and devour them,
The wind shall tear their nations
From the fact of the earth.
Lightning shall rain down from the sky,
They shall cry out to their false gods,
And find silence.
—Canticle of Andraste 7:19
Who was Andraste? This question has lingered in the ages since her death, not as easily answered as the faithful assume. Born an Alamarrislave in the frontier realm of the Tevinter Imperium, now Ferelden, theChant says she is the Bride of the Maker—that He told her in a vision of her role leading the rebellion against the corrupt magisters. Is it true, or, as some early Andrastian cults believed, did a friendly spirit bestow this "vision"? We must remember that legends of Andraste were multitude in the years immediately following her execution, and beliefs we take for granted belong to the "cult" victorious in suppressing all others. Indeed, even to suggest there was once disagreement was considered the direst heresy... until today, when we have lost even the memory of disagreement. All we know for certain is that Andraste inspired a world gripped by tyranny and chaos, that she helped spark a war which tore all of Thedas asunder.
—From Questioning the Chant by Magister Vibius Agorian
Unshaken by the darkness of the world,
She shall know true peace.
Many are those who wander in sin,
Despairing that they are lost forever,
But the one who repents, who has faith
Unshaken by the darkness of the world,
And boasts not, nor gloats
Over the misfortunes of the weak, but takes delight
In the Maker's law and creations, she shall know
The peace of the Maker's benediction.%5B30%5D
The Light shall lead her safely
Through the paths of this world, and into the next.
For she who trusts in the Maker, fire is her water.
As the moth sees light and goes toward flame,
She should see fire and go towards Light.
The Veil holds no uncertainty for her,
And she will know no fear of death, for the Maker
Shall be her beacon and her shield, her foundation and her sword.
-Transfigurations 10:1
Maybe it's simple. As Anders says, "seems to me Andraste counsels men to find their own path to the Maker" and Leliana sees her vision of the Chantry as her path to the Maker. if the Maker speaks to people in dreams as the Chant says, perhaps she really is the Maker's agent. How does one know? Perhaps it doesn't work like that. Faith requires that one believe, not know. And her actions, whether for good or ill is left for only for the Maker if he exists to judge. But what she does want, setting the Chantry on the path to virtue and charity, trying to remove persecution, how can one not see that as good and decent?
Perhaps it is no concern to you. But it seems to me you desire absolute certainty when life nor religion is like that. The Maker will not slap you across the face with a giant sign and tell you what to believe. You question why Leliana is suited, well the same question can be said for any other Divine or any who seeks to tell people how to live their lives. You spurn warm fuzzy feelings and all that but that is what belief is founded on. As Justinia says, "Idealism is the chantry's stock in trade. A religion without ideals is tyranny." It's simple, Leliana sees the Chant as a social architecture for society to lead to virtue, Shouldn't that be the only justification a religious person needs? If that doesn't satisfy, then it doesn't.