Okay, I'll buy that. Loghain is not conspiring with the darkspawn. Any more than the Grey Wardens are. Most people are complicated. Most good people are nuanced in their goodness, and most "bad" people have redeeming qualities, whether you can find them or not is another question.
I like what Wynn says about Uldred. "I'm sure has some redeeming qualities. He must have a perfectly good reason for not displaying them." Is this what you're talking about?
I mean, my pc is basically good. But she's doing the questline for the crows. Because, well, those people must need killing. The reason she decided to go ahead was that she had already killed the first mark, and for excellent reason. I just didn't realize I could get a reward for it.
Aren't most people more interesting when push comes to shove? Maybe the story/game is trying to get us to take a second look, a really good look, at those around us, and question our preconceived ideas about them. I know that if I look at just about anyone, I can find points about them that contradict the overall ideal. Howe, in this game, is the one exception.
I end the game wondering...
What is Morrigan really all about?
What or who is Flemeth?
Wynn gets called on the carpet by the guy/spirit that protects the urn for her platitudes.
Leliana gets called out also for her delusions.
Sten starts out as a murderer, but he's just a single-minded warrior.
Shale is, well, completely different than she appears.
So, why not Loghain. Anora has some fond memories of him. Even though she fears he's irredeemable. In the other hand, who knows what you can believe from Anora (as we are warned by Arl Eamon. But even the queen of Orlais compliments Anora on her skills as a queen. She's politically shrewd, and that's worked in her favor.
If you're saying, these characters are more deep aind interesting than they appear to be, and our own actions in game can affect that, well, then yes, you are right. After all, ripples in a pond. Who knows where that ripple becomes a wave, and washes over some plant and waters some other? The more power we have, I suppose, it can be argued, the more unintended consequences our actions can have. So yes, there are shades and nuances in the story and the character, based on what you've done up to the point in the story, apparently. So, one has to go try doing things differently, and in a different order, to see what comes of it.