I want to knpw what was Yakous second wish. They left us at a setup ending and s2 is probably not coming

In the (only yearly held!) genin and chunin exams only very few (if at all) ninjas pass. And the ones that do not pass maybe even die in the exams. Yet, there seem to be endless chunin and jonin in the course of the story. Just take the regular jonin, the anbu, the teachers, the count- and name-l...