I like the idea of the CSI, and I also think that the red and green coloring implies negative/positive connotation, so people will naturally take it as good/bad.
As an analyst, I would think metrics like #/% of self-votes & #/% of same-user votes, and also the same by vote value rather than counts would all be very useful stats. I really like the pie chart too, because graphics are always good to break up all of the various stats. Having more graphs/charts would also be useful, like daily/weekly/monthly votes metrics and whatnot plotted on a line graph. I'm a data junkie ;)