A product roadmap is built on making hard decisions about what to fix and what to finish, as bugs in one area can conflict with features in another. Focusing solely on new features or repairs can lead to a product that is either too shallow or too shallow, respectively. To improve a product, it's essential to focus on areas that are both important and disappointing to customers. Anthony Ullwick's opportunity algorithm provides a practical way to plan a roadmap by taking importance and satisfaction into account, which highlights opportunities that might otherwise go unnoticed. Regularly, the biggest opportunities lie in areas considered complete or bug-free. The 80/20 school of thought can lead product managers astray, as giving customers a B-grade experience on important tasks may not be the best approach. Addressing product shortcomings is crucial to staying competitive.