Love the post, don’t love the names given.
I think “capacity growth” is a bit too vague, something like “tractable, common-sense global interventions” seems better.
I also think “moonshots” is a bit derogatory, something like “speculative, high-uncertainty causes” seems better.
How are you defining global capacity, then? This is currently being argued in other replies better than I can, but I think there’s a good chance that the most reasonable definition implies optimal actions very different than GiveWell. Although I could be wrong.
I don’t really think the important part is the metric—the important part is that we’re aiming for interventions that agree with common sense and don’t require accepting controversial philosophical positions (beyond rejecting pro-local bias I guess)