I like the idea of adding the game to another one. And not only supernatural/horror related games. Since this technique was common in the 19th century, I think it also fits perfectly in a steampunk-themed game. Can you imagine Jules Verne writing in the middle of a séance? Hell, yeah!!! In addition, GraveCard, my other game, could fit like a glove on Mörk Börg.
On a personal note, you say on your playthrough "I have used the Psychomanteum process before in real life paranormal investigation with interesting results". We're on the same page, buddy ;)
Thank you very much for your kind words here and on your blog!!! And if you try it in a large game, just let me know. It will be a pleasure to read the results!!!
Kind regards,
Javier