Maybe it's what America needs, but will certainly never get.
All of the Presidential candidates have posited what America needs: each of them have glommed on to one or several particular issues (the important ones, of course) tauting their expertise. Americans respond to the candidates simply when they touch those particular buttons. But the qualities of a President in these times require an almost super-human person - a "Master" at almost everything, or at least the appearance that he/she can do everything. We certainly do not need a "one trick pony."
In other words, America needs a pure Renaissance Man, one who seems to know and do everything with little effort. A polymath.
During the Renaissance, Baldassare Castiglione, in his guide The Book of the Courtier, described how an ideal courtier should have polymathic traits.  Castiglione's guide stressed the kind of attitude that should accompany the many talents of a polymath, an attitude he called sprezzatura. A courtier should have a detached, cool, nonchalant attitude, and speak well, sing, recite poetry, have proper bearing, be athletic, know the humanities and classics, paint and draw and possess many other skills, always without showy or boastful behavior, in short, with sprezzatura. The many talents of the polymath should appear to others to be performed without effort, in an unstrained way, almost without thought.
Updating the Renaissance Man would be challenging even for those at genius level I.Q. For the President to be a Renaissance Man (or Woman), he would have to be a veritable master at economics, foreign affairs, Homeland Security, civil rights, politics, the Constitution, religious, social and legal issues while having interests in technology, art and music.
And be fluent in Spanish, Cantonese and French.
Plus doing all of the above with the greatest of ease.