What word would you use to describe fiction that presents the world realistically, spurning the comfortable lies that make up most popular fiction, yet without any of the characters necessarily being rationalists? That's the kind of fiction I'm more interested in. What's interesting about Fallout: Equestria is that it sometimes does that, even if by accident. That's what's interesting about fan-fiction: You're allowed to write truthfully about the world, in a way that a professional editor probably wouldn't let you.
Fallout: Equestria struck me as philosophically deep compared to books you can buy in the bookstore. But I don't think that was due to careful thought by the author, because it was too inconsistent and incompletely worked-out. I think that the books in the bookstore have had any accidental wisdom systematically edited out, especially adventure, fantasy, and romance.
SPOILER
For instance, it's not as interesting that Red Eyes is a rationalist and a consequentialist (he is more of a straw vulcan), as that the hero who has set out to destroy Red Eyes' evil organization ends up having to defend it because it's so damn useful, and then allying with it to maintain the balance of power.
For the past two months, I've been writing, and posting, roughly two thousand words a day of "Myou've Gotta be Kidding Me", a story set in a "My Little Pony: Friendship is Magic" fanfic universe, "Chess Game of the Gods". Outside of the sheer NaNoWriMo-like exercise of pushing out near-daily chapters, I've also been trying to keep in mind the various principles I've learned from Yudkowsky and LessWrong, and to try to present them in a way that people who like reading MLP fanfics might be able to appreciate.
I've just come to something of a minor climax with chapter 60, and while I'll definitely be continuing the story, this seems like a good time to mention it here, for whatever feedback and constructive criticism anyone cares to offer.