I think the occult stuff is silly, but I think most of the alt history is silly.
that said, on the scale of hoi4, if you wanted to introduce some occult element to Germany and have that actually be engaging, you’d need to—in my opinion—develop a new system. NFs, decisions and event chains wouldn’t really cut the mustard.
So, what sort of mechanical system can be added that has wide applicability to the broader game but satisfies this occult itch?
the propaganda system, balance of power system, congress system, while paradox has only implemented them into one country, they all have wider applicability that modders can take advantage of.
I don’t have an answer, I’m not a game developer, but I think that’s the real interesting nugget in occult or any wonderweapon content. If it’s just flavor text or working within existing systems it’s a lot less interesting to me.