None of these risks are new, they've been with us for decades.
I am not going to try and tell someone they should not have a stash of cash on hand for emergencies, but realize that will be good only in short-term emergencies.
In a prolonged situation you'll need alternative items of value.
I like Don's idea of private insurance. Of course many participants will have to come on board to lower premiums, but the theory is sound. However, the Fed's would still manage the money supply, so cash restrictions and such will never be alleviated. For that latter part, allowing states to set up supplemental credit reserves would be one way, but that would require the national congress to amend banking laws allowing it. (The states would act as intermediaries between banks and the Fed, eating the lending charge so banks could increase their cash on hand) Plus, solvent states would have an added advantage over their financially troubled counterparts, another inducement for fiscal responsibility can only be a good thing!