Too PC for me.

[Spongebob]

Maybe a true Superman would guide a declining America back to the virtues that made America great and the kind of America worthy of its principles...you know rather than give up on the nation that raised him into the generous and couragous being he became...give up for some cosmopolitain identity.

I think that approach makes the same failed assumption that supports removing it.  First, Superman is an otherworldly immigrant.  Why would an alien to this world feel compelled to defend the interests of a single nation, especially a being as powerful as him.  Why wouldn't his interests be global in scope?  If not, consider what might have been had he landed in Russia or China or Germany...

It also ignores the obvious trope that America was ever great (and what that even means) and what it was that made it so.  This gets deep into historical and political details, but the upshot is that America basically did one thing right, it formed a representative democratic government based on a set of ideals that promoted individual freedom (the Constitution).  It wasn't the only country moving this way at the time, but it was the country that did so most emphatically.  But let's not pretend that once these rules of freedom were in place, those who ran the country (politically and economically) didn't immediately go about skirting those same rules.  The US may have been the most free place in the world on paper, but it has never lived up to that potential, not even close.  I've understood since a pretty young age that if the Constitution was taken as literally as it should be, a lot of Americans wouldn't want to live here.

Whatever visions people concoct when they hear things like "The American Way" or what "made America great" is hopelessly flawed.  America became a world power through pretty much the same means every other nation has, just with better PR.  This is why the whole MAGA movement is based on a false historical narrative and is mostly bullshit.  To really get into those details, we would need a whole new thread.