I tried to make this comment before, but for some reason it isn’t visible, so I’m reposting it.
I think this is an interesting paper. I gave it an upvote.
One comment: It is misleading to say that on total utilitarianism + longtermism “the axiological difference between S1 and S2 is negligible”. It may be negligible compared to the difference between either and utopia, but that doesn’t mean it’s negligible in absolute terms. Saying that the disvalue of a single terrible thing happening to one person is “negligible” compared to the total disvalue in the world over the course of ten years doesn’t necessarily mean one is callous about the former.