I dont actually think bitcoin dominance means anything significant at all apart from an indication that either there are more altcoins in the market, or some altcoins are increasing/decreasing in value. To look at it at an even bigger picture, what the hell is the market cap for a currency anyway? what is the "market cap" of the Japanese yen. I'm intrigued by your by percentage tool, so (pardon my ignorance) it shows the percentage of trades thats actually a buy? correct?