The fact that most PR/FAQs don’t get approved is a feature, not a bug. Spending time up front to think through all the details of a product, and to determine—without committing precious software development resources—which products not to build, preserves your company’s resources to build products that will yield the highest impact for customers and your business.
How to increase predictability. Takes more resources from user research & viability — product, design — to focus up-front on discovery, so we can test a whole lot of ideas and then discard most of them to focus our efforts.