As an idea, perhaps the possibility that certain paths would result in the addition of a new story based on his interactions and hopes for continued connection with you? As original fairytales were ultimately warnings, this is his way of providing a warning despite the other presence.
I'm also glad you'll leave the voice optional. I'm not a fan of the beeps because I'm already filling in so many of the other blanks with my imagination, including the voice, so it would pull me out of the story.
Thank you for an amazing game and I can't wait to play the updated version!