This looks promising!
I often find myself second guessing estimations of animal charity effectiveness as it feels like they might have cherry-picked their 'moral metric'. Breaking it down in this way seems like a laudable and structured approach for assessing an issue with quite so many unknown variables.
Things that excited me:
I could imagine a report where, for a given intervention, each of these is estimated, confidence weightings given and explanations of evidence, priors and reasonings for each estimation. Reading that would have given me more confidence when I was earlier in my journey re animal suffering.
Complex, intuition-challenging problems broken down into smaller, more intuition-friendly problems seems valuable.
I'd guess it's likely that making many weighted judgement calls and making gut checks from many angles will result in answers closer aligned with our values.
+1 London community is awesome.
Also heard very good things about the Berlin & Vancouver communities.