He said in an interview that Kreia is used to address his problems with the force in Star Wars mythos. KOTOR II's story is entirely built around Kreia and MCA's issues with the force are philosophical in nature.
Since Kreia represents his issues with the force she is the philosophical underpinning to the story. Everything else in the game; encounters, quests, locations, etc.. is designed around Kreia.
The point i'm trying to make is that RPGs that are designed without an interesting philosophical statement at its foundation are empty and lack substance. When world building or mechanics come first in design you end up with Skyrim, doomed to be consumed and tossed out immediately when some higher graphics shitfest releases. When philosophy comes first you end up with Morrowind.
I see what you're getting at. You're addressing something which is near and dear to my heart, and something which is INTEGRAL to storytelling that -- in my experience -- is not discussed enough and which is almost never taught. That is: what a story is ABOUT. And I don't mean its controlling idea -- what you're getting at goes beyond any controlling idea. A great story has to have a stance. A position. A place in the cosmos of ideas.
I like to call this a story's
ethos. What is it saying, really? What good does it perform? What does it help us to understand? To where does it take us, and why?
A good story has a clear ethos -- you're right about that. But let me tell you: in my experience, a
great story isn't so sure of itself. It accepts its own possibilities. Until recently I dealt with this idea a lot at my real-life job, and I will tell you: the reason most stories fail is because they have no ethos. And the reason stories which don't fail don't survive is because they don't accept the fact they can't have all the answers.
I like the way you're talking. But I assure you; you are mistaken with regards to KOTOR II's ethos. For one, it isn't so sure of itself as you are of it. And for another, the story is centered far more around the Exile than it is around Kreia. And most amusingly, she would agree with me:
4:45:
"I would have killed the galaxy to preserve
you. I would have let the galaxy die.
You are more rare than
you know; and what
you have taught
yourself must not be allowed to die."