@GailL1
I think there are plenty of opportunities currently to stash away savings for retirement, including employer plans (401K, etc) and personal plans (IRA, Roth, etc), so there doesn't seem to be a pressing need to create new plans. And certainly there is the option for people to actually save money on their own in regular accounts for long term use (the smart-aleck in me wants to add "gasp! save our own money?!", but I won't).
I say "regular" and I am thinking of non-tax favored accounts (tax favored accounts being such as IRAs, Roth, employer plans, etc), which provide the greatest flexibility in withdrawals as for home purchase, college, emergencies, and retirement. I think I have read of proposed, or perhaps actual, "savings" plans for low income persons that would have some form of government encouragement...through income tax savings or matching or something...since I would not be eligible I didn't pay too much attention to these.
The long term viability of SS is, I think, another topic entirely (versus personal responsibility), but I have no issue with increasing the ceiling of taxable salary to something higher. I recall reading what the rationale is for it being what it is and I don't recall what that is exactly but there is some rationale. But increasing modestly I think is okay. But that likely won't increase benefits over the broad range of beneficiaries.
So, overall, no, I don't think giving people the option of upping their SS benefit or other option on their own nickel will solve the main issue. I would like to think that more education on this issue would help. And that may be the case. The past few years I have seen endless articles related to these issues (similar to those articles that pummeled home to taxpayers that for special reasons there may not have been sufficient payroll withholdings for the 2018 tax year...yet many people were STILL surprised that they didn't have enough withheld). I hope, and think, that the message is getting out to younger generations that their retirement will depend in a major part (one leg of the three?) on their own savings.
There is much more general attention paid to investing these days than in, say, the 1960's when mutual funds were relatively rare and charged very high sales fees and expenses. Things are much more open and competitive these days and the knowledge is out there for those who seek it.
Although I am politically liberal I also see the other side of the coin. My wife's family in Canada benefits greatly from the social plans there. Without them several family members would be paupers. And yet they carry on without regard for financial reality as I see it (and due to their special circumstances, some of mental illness and others of advanced old age, I can't really fault them at this point in time). Though I would appreciate it if they showed some appreciation to the taxpayers of that country. And other family members in their old "home" country depend strictly on hand-outs from their Western relatives. They've been offered work but mostly just prefer to be on the dole. Maddening!