Interesting.

Don't quite agree with your Arthur characterization but have to say this fic's written very well. I loved these dialogues.

But what matters is not those you slay, but those you save.

Arthur, I ask you to be the hero your knights know you are- and to let them be the heroes along with you.

Hi there!I just saw the movie yesterday.I found that it had intresting scenes but it lacks in scenario.And it claimed to be closer to the real history behind the myth of King Arthur.But there were a lot of mistakes in time and place while-I agree with you-some important characters, especially females were ommited.Besides,Sir Lancelot wasn't a real hero but a very later added figure from the poets of middle ages.
Back to your story.I found it good as a begining with well developed feelings. After all, Morgana was alwayw my favourite character and that's why i read it almost immediately.I'm wondering what you're planning next,although I'm a little disappointed about all these story for her relationship with Arthur as his sister.In her very early appearance in the myth of King Arthur was his true love instead of his sister.And of course she was seen as a wise and good woman instead of the evil one in the later stories. That's why I believe that she and Arthur were the real tragic couple(story if you can't stand any hint of incest) and not Lancelot and Guinevere.
Regardless, it's your story and I can't say how to write it. The choise is yours. I'm just waiting for your update!:)