To start, I would focus on understanding the degree and nature of the sales decline. I would examine high-level metrics like total sales before delving into more detailed analysis. This could involve breaking down sales data by product, region, or customer type to pinpoint where the decline is occurring. Next, I would seek to uncover any underlying factors contributing to the decline. This could include discussions with the sales team, reviewing customer feedback, analyzing market trends, and looking at competitors. Additionally, I would carefully assess any recent changes, such as adjustments to pricing strategies, marketing efforts, or product updates, that may have influenced the downturn. After that, I would evaluate whether and how a new feature could address the identified causes of the sales decline. I would assess the potential impact of the feature, considering its alignment with our business goals and customer needs, the resources it would require, and the anticipated return on investment. Finally, based on the identified causes and possible solutions, I would determine whether to develop the new feature. If the feature addresses the identified issues and is likely to yield a positive return on investment, it would be logical to move forward with it. If that is not the case, we would need to explore alternative solutions.