There is a lot to love here, even just from reading the PDF. Brilliant theming. The hell-triangle of dice is a fascinating gameplay idea. And it sounds like the Superego mechanic will make for some incredible storytelling, as the Orpheans become more human.
My favorite little thing is rolling for a Serial ID. Love the idea of a lucky roll making your ID simply 'Z' or '123' or 'f2378v4h8fj23f9823'.