Solution

Recognise that the quality of the requirements are as good as the process that generates them, so optimise the 'requirements value stream'  

Analysis 
Customer Defined Value involves a series of crucial steps in creating and managing product requirements. These steps remain consistent across various businesses and include items like requirements collection, prioritization, cascading, verification and validation.

To enhance your processes and avoid waste due to too few (or too many!!!)  features,  it's essential to identify areas for improvement within each step and tailor new standards to align with your unique business needs. The 'Agile' approach emphasizes the value of rapid iterations on requirements, facilitated by continuous customer involvement, rather than working from a fixed set based on assumption that the customer exactly know what he wants. 

Result

A set of prioritised requirements and differentiators. Clear engineering specifications. Early verification validation and adaptation of requirements.