I wrote this post that covers a high level framework I use, aka Value stacking:
https://medium.com/@TheUpstartGuy/value-stacking-multiplying-product-growth-88230ee4cfc2
I will post a follow up on medium in which I'll deep dive on prioritisation, but there are many frameworks already in use out there, but the thing that I see missing is a coherent vision or strategy that provides direction that should inform your prioritisation.