From what I've read of your work you can turn your hand to pretty much anything but from a personal point of view (not just fanfics but any form of writing/tv etc) I'm a big fan of drama, angst, pathos and suchlike. What I like about your writing is your ability to get inside the character's heads and describe what they're thinking even as children, which I find the most difficult thing to do. I'm a huge Kane fan but I've never been an Angie fan and general fics about her don't really interest me but I'm finding this one fascinating. I can see why you like Kane and Angie because they are both deeply complex, many-dimensional characters and from a personal point of view I think they're the type of characters you write the best about. That might just be because I'm interested in how childhood perceptions affect adult life and you have the ability to get behind why those sorts of characters act the way they do. I'd certainly be interested to read about Sally as a child because we've all grown up with her and know her pretty well but if you could get inside her head and put a different slant on her life it could be really interesting. That's my opinion for what it's worth and I'll quite happily continue to read anything you write so I hope you'll continue to write much more.
P.S. I'm not a fan of couple based or soppy stories but K/K are my exception and anything you write about them is acceptable!