What posessed me today was an idea of releasing the worldbuild before I publish (or self-publish, which is way more likely) the book.
The floor plans.
Raising awareness through Kickstarter or likes of it—I give you the World, already built, you give me the story set in it, and see how it fits within mine? An fundraising inverse version of fan fiction? Write me a story, set in the world I built for you (I set the general rules, of course, for it is a sword-and-shield level civilization, no firearms, etc.), and, if selected, get published alongside my humble self?
Is anyone stupid enough to bite on that?
That is the question…