Tau Zero - the last, best hope for BPP?

I noticed recently that following the lapse of funding for projects like NASA's Breakthrough Propulsion Physics programme and BAE Systems' Greenglow, the former NASA BPP head Marc Millis has begun the Tau Zero Foundation in his spare time. While it has yet to have its own independent web presence, I have high hopes for it as it encompasses a wide range of possible propulsion techniques, and like the prior NASA effort, aims to attempt a serious and sceptical (though this has unfortunate CSICOP-like kneejerk-debunking connotations these days; maybe zetetic would be a better term) approach.