Thinking in products helps building successful features. By defining the problems the product tackles, it answers the question “why do we build this product?”. Defining the target audience “who has these problems?” and defining the solution “how are we doing this?” will give enough guidance to create a new feature. Setting up a goal will help to measure the success of this feature.
The core user experience is not a set of features; in fact, it is the job users hire the product for.