Even though this is a bit outdated now, the first 10 minutes of this talk at EAG 2018 give a good overview of GPI's high-level theory of change.
Hi Rob, we now have a HTML version of the agenda: https://globalprioritiesinstitute.org/research-agenda-web-version/
Thank you for asking! The ordering of research areas in the Table of Contents does loosely track our research prioritisation, but only within the constraints of making the Agenda a reasonably coherent document, with similar subject matter grouped together.
We hope to post a web-friendly version of the agenda in the next month or two. This version will let users sort the research topics in various ways, including, potentially, directly on the basis of research priority.
Thanks for the feedback. We'll consider this for the future.