The law requiries that actuaries use a 75 year horizon to forcast the needs of Social security. I know of no individual, organization or computer that can with any degree of accuracy or reliability and correctly forcast that far into the future. Having said that I will accept that there is a "long" term funding problem that could occur some time in the future. Logic indicates thats the sooner one deals with a problem the easier it is to resolve. That would seem to indicate that if you are going squirrel hunting, don't use an elephant gun. I will concede that ther is no solution that will be pain free so it appears that a the approach should be incremental in nature and not necessary to change a oven social program into something it was never intended to be.
Using moderate corrections now with built in "Look Backs" for fine tuning is an option that should be given more serious consideration now. It would take the heat out of the discussion and tend to aid decision making for all concerned.
