Alicorn: I like e for the subject case, en for the object, and es for possessive, but I don't use them in meatspace or other forums as much as in my thoughts because it confuses people. I'll probably use them here. What do you think?

I'll use those pronouns for you if you prefer them. When I'm picking gender-neutral pronouns on my own I usually use some combination of Spivak and singular "they".