If they succeed in getting mass adoption for this thing, I feel like the companies on-board have basically bootstrapped themselves to sovereignty. It'll be interesting to see how that plays out, if nothing else!
I'm no expert in US law at all, but my impression as an outsider is that anything that could look like money laundering or a way to hide financial transactions will not be looked kindly upon, and that slapping the "crypto" moniker on this new currency won't make much difference.