I see your point(s), Little Hawk, but the tripartite system of govt. was supposed to address the problem of having a single 'leader'....and for most of our 250+ years, it has done pretty well. It has its problems...as when the courts get packed with extremists...(of either end of the spectrum)...or when congress & the presidency are at loggerheads; now if we could find a better way of electing the president that did not favor the monied interests, we might have something...(and, of course, find a way to reduce the influence of lobbyists on Congress.)

I KNOW that there are men & women out there with intelligence and good attitudes who COULD be competent as president....but they are too smart and otherwise unwilling or unable to run under the current $y$tem.