The best way to bring decentralization to the network is just to mine for yourself. I don't know what I think about so much control of the network going to so few.
That's the idea behind p2pool, solo mining with pooled reward. Unless you have a 100Ghash farm hiding in your garage to reduce the variance???
Variance... whatever. You get paid once every 2 months a lump sum or a little bit every day. Why does it matter except to satisfy the monkey brain.
If you do have a garage farm that can get a block ever other day, reducing variance is really pointless.
A problem with solo is that you waste 5 minute everyday to check if you've found a block and while you wait for a first block you wonder if it's working or not.
Don't forget about difficulty increases. Variance evens out over the long term with constant difficulty. What happens if you are solo mining with an expected reward every 2 months and hit an unlucky streak with a large difficulty increase streak??
