In a recent tweet, Jacob Appelbaum commends a project known as SubgraphOS. https://twitter.com/ioerror/status/472757244350980096
It is similar to the idea of Whonix except that it uses the inferior isolation of LXC containers to protect against local exploitation of vulnerable programs.
Patrick, I was thinking that if you can get into a dialogue with the, convincing them to collaborate on Whonix then it would be a neat idea since the goals of both projects are the same.