Do you have a consistent approach for determining the right features to build next?

I’m researching the struggles Product Managers (like myself) go through to determine the right features to build next. I’m trying to develop a process (and SaaS platform) to help PMs consistent discover and Prioritise the right features to build next. I’ve looked into Teresa Torres’s opportunity solution tree, feature Prioritisation frameworks, design thinking process, customer interviews, qualitative/quantitative research, etc. Aspects of them have been considered and integrated in the platform, all to provide a more structured approach to fulfilling the needs of customers. for more info: https://www.PrepxUs.com