For anybody interested-- My transformative/derivative works policy is now too long to fit here and so can be found on DreamWidth: http://somethingdarker.dreamwidth.org/38406.html
Generally speaking, though, whatever you want to do that's transformative is fine with me.
Please do not repost my fic elsewhere without my express permission.
I apologize to people who are waiting for more Rheotaxis. I haven't given up. I'm having trouble finding a way into the next chapter, enough so that I'm considering completely handwaving Nagi's time on the capitol planet even though I think it's important. I have the final chapter of Rheotaxis drafted (though it will change a fair amount), and I'm willing to share that with anyone who would prefer that to waiting.