Ridgeway's quote of Alan Greenspan is instructive.
"Simply put, enough resources must be set aside over a lifetime of work to fund retirement consumption...."
This pretty much sums up the direction in which Social Security reform ought to move - away from the pay-as-you-go, generational wealth transfer scheme we have now and to a fully funded wealth creation system.
Any other type of reform is simply a game of smoke and mirrors designed not to offend anyone now living or politically viable and to put off the burden onto the unborn and politcally helpless.