Do enough people even want a change? I would be that there are a majority of happy houseslaves that won't wake up to the fact that SS is in trouble till they stop getting their opiate-like platitudes or checks. Then they'll cry for the government to "do something". Personally, I'd like to see SS scrapped. It's nothing but a massive fraud.
I wish they'd let workers who choose to opt out of the system voluntarily don't have to contribute anything to it.