Everyone needs a plan b passport. Those of us coming from countries with terrible passports are often ahead of the curve on this.
Discussion
What country would you recommend for Americans?
I don’t think it useful to think like that because each person and family is different. Even neighbors do things differently. Figure out what your family needs and find a place to fits that requirement. There is also never going to be a ‘perfect’ place. Things you don’t think about now, might because a big deal in a new country.