Just purchased this game and have read through it. I'm not sure I'm sold on the collaborative mystery aspect, partly because it seems like it would require a lot of suspension of OOC knowledge. However I won't knock it til I try it.
What I will knock is the lack of conceptual footholds provided. Giving lists of vague names with a few adjectives might as well be giving nothing; the table entries were too little for me to build off of or visualize, and there's really no other "meat" to this game. The rules seem clean enough, on the simple side but that's fine. But if you opt for a simple ruleset you need the game's tone, themes, etc. to carry it. I don't feel like that's happening here.
I understand wanting to leave things broad so players can do what they want with the system, but at a certain point you need to commit to some things for us so there's somewhere for us to build from.