It's the eternal question: what's the Next Big Thing? What great idea will become a huge success, leading to numerous knockoffs? (OK, that last part isn't necesarily a given, but still.) Didi Feldman at the Oxford University Press boils it down to a series of bulletpoints in a piece for the Chronicle of Higher Education:

Identify the question driving your book.

Identify why that question matters.

Create a narrative structure. Or, how to think like an architect.

Make the story your own.

Avoid Abstraction.

Understand the true beginning of your story.

Understand the end of your story.

Be fair.

Give your book a pithy title.