The premises sound much less intuitive than the conclusions, and I accept the Repugnant Conclusion anyway.
Me too. I think the "Repugnancy" comes from picturing a very low but positive quality of life as some kind of dull gray monotone, instead of the usual ups and downs, and then feeling enormous boredom, and then projecting that boredom onto the scenario.
Joshua Greene manages to squeeze his ideas about 'point and shoot morality vs. manual mode morality' into just 10 minutes. For those unfamiliar, his work is a neuroscientific approach to recommending that we shut up and multiply.
Greene's 10-minute video lecture.