Of those, I'm most in favor of increasing retirement age. The original plan called for social security to be available in the waning years of life after a person could no longer provide for himself/herself.
It was not designed to be a program so mom & pop could travel off to Florida and live in the sun for a couple of decades.
I'd increase the retirement age to about 70-72.
Then, I'd add new legislation allowing IRA's with full income exclusion up to an amount that would enable a person saving for 30-40 years to set aside X number of dollars that would provide a personal annuity equal to at least the minimum non-poverty level.
(What I'd really prefer is the NRST...I'm assuming above that the present tax system continues.)
If you keep increasing retirement age, then Social Security is merely another tax, because very few people will actually live to collect it.
Whent it was introduced, life expectance was 65, people just didn't catch on to the scheme.
As people are living longer, they actually collect, which demonstrates that it's nothing but a Ponzi scheme.