Another question I asked a few pages back...is there a way to show the top ten miners in a pie chart or something? Would be interesting to know how many large farms are mining SpreadX11.
It should be possible to crawl the blockchain for which address has mined each block. I could probably script this if I could build a local block explorer...
That may be as close as you're going to get though - just as it's impossible to assume true coin distribution via address as someone can have multiple wallets/addresses.
That may not be that easy either TLC. I've noticed that my own rig uses a different address for each block thus far. I'm throwing about 1.3 Mh at the network and the couple blocks I've found, each have a different addy. I never set up a dedicated addy for mining in the config file by the way.