DaT, people are misinterpreting your post to suggest that miners can expect to earn less when they solo with smaller hashrate. The expected return is identical for any hashrate between solo'ing, and pool-mining, no matter the combined hashrate, ignoring all other factors (e.g. central pools stealing fees or just plain stealing, or latency tricks like what p2pool does to achieve lower orphan rates than anybody.)

I recognise you are trying to explain that variance in return is less with pooled mining or higher hashrate, but this is meaningful only because humans think that way because of our weird broken minds. That is, a lower variance in return, and especially a more-frequent payout, feels like it is worth more to humans just because we all know we might get hit by a bus tomorrow.

What you are doing is showing in a calculation a way for people to calculate payout schedules they are more-comfortable with.

People should recognise that mining in a pool like P2Pool which has at the moment a daily payout, can be expected over time to payout identically to higher-hashrate collectives.