I thought my first answer already did what you’re asking for, and it has (right now) the most upvotes, which may reflect endorsement. Are you looking for something more concrete or that isn’t tied to people who would exist anyway being worse off? I added another answer.
The ways to avoid the RC, AFAIK, should fall under at least one of the following, and so intuitions/thought experiments should match:
Have some kind of threshold (a critical level, a sufficientarian threshold or a lexical threshold), and marginally good lives fall below it while the very good lives are above. It could be a “vague” threshold.
Non-additive (possibly aggregating in some other way, e.g. with decreasing marginal returns to additional people, average utilitarian, maximin or softer versions like rank-discounted utilitarianism which strong prioritize the worst off, or strongly prioritizing better lives, like geometrism).
Person-affecting.
Carry in other assumptions/values and appeal to them, e.g. more overall bad in the larger population.
I thought my first answer already did what you’re asking for, and it has (right now) the most upvotes, which may reflect endorsement. Are you looking for something more concrete or that isn’t tied to people who would exist anyway being worse off? I added another answer.
The ways to avoid the RC, AFAIK, should fall under at least one of the following, and so intuitions/thought experiments should match:
Have some kind of threshold (a critical level, a sufficientarian threshold or a lexical threshold), and marginally good lives fall below it while the very good lives are above. It could be a “vague” threshold.
Non-additive (possibly aggregating in some other way, e.g. with decreasing marginal returns to additional people, average utilitarian, maximin or softer versions like rank-discounted utilitarianism which strong prioritize the worst off, or strongly prioritizing better lives, like geometrism).
Person-affecting.
Carry in other assumptions/values and appeal to them, e.g. more overall bad in the larger population.
See also:
https://plato.stanford.edu/entries/repugnant-conclusion/#EigWayDeaRepCon