If someone wants to write a fixit, that would have to be addressed. I'm tempted to do it myself, although I've only written fanfic years ago, and it was pretty awful. I'm not sure how it can be healed myself.

The saddest thing, in my mind, is that he is trying to do what he thinks is the right thing for the person he loves. And what's worse is that he knows this time it is permanent. It makes me think of "Turn Left" and how he died there because he chose not to regenerate after losing her. (I know the show doesn't say that directly, but it's really implied.) Is he just going to rush into something suicidal? (another thing that could be explored in fic...)