Thanks for the interesting post—definitely gives one some things to think about!
Here’s another point to consider: depending on the costs, one of the most effective interventions may be to raise the self-esteem levels of people in high income countries. Note: I’m operating under a model in which self-esteem is determined primarily by personal responsibility level, first for one’s emotions and then one’s actions (see “The Six Pillars of Self-Esteem” by N. Branden). Raising people’s self-esteem levels should raise their self-reported life satisfactions, and also likely have secondary effects on those they interact with. In addition, people who have higher self-esteem due to being more responsible are more likely to practice responsibility in terms of human and animal suffering (as by donating to causes and/or going vegetarian/vegan, with people from high income countries having more potential impact here). Of course, raising self-esteem levels in low income countries could also be quite beneficial—for instance, higher self-esteem people may be more of a driving force for raising health standards in their countries.
Thanks for the interesting post. I’m working on something like what you describe in your “Going Forward” section: https://www.lesswrong.com/posts/gz7eSELFcRYJLdnkE/towards-an-ethics-calculator-for-use-by-an-agi
Planning to post an update about my progress on lesswrong soon.