Thanks for posting this and for opening up the process! It’s a fast-moving space, obviously, and it might be best to start with an informal survey of what’s currently available and what’s under development.
You’ve probably already looked at GFI’s white space doc, but if not then it might be a good place to start: https://docs.google.com/document/d/1zCwLkwqwYzfzxwIm1-iHrvheRhMhbLYBxqEiz_7bHdE/edit
Jonathon, thank you for sharing the results of the MFA study and for drawing attention to the Faunalytics research showing the high recidivism rate. As others have said, I would be concerned that those who have lapsed are more likely to lapse again in the future, but I still think this is incredibly promising. In our original study, we found that more than a third (37%) of former vegetarians/vegans say they are interested in re-adopting the diet.
For those interested in the details, this blog describes the various reports and resources that we produced, including access to the full dataset.