let me explain :
-when kakashi was training naruto (rasensuriken) he told him that by the time a ninja become a jounin he knows at least to use 2 chakra natures, so I assume that naruto has more than the wind nature now that he is beyond jounin
- in the fight against the juubi, the 4 hokages made a high level barrier (that only 4 kage level shinobis could do), so I assume that this is a jutsu that you need to master in order to become hokage since the hokages didn't even ask minato if he knows this jutsu (hashi and tobi didn't even know he existed)
I think that in order to pass the jounin test you need to master some jutsus and have more than a chakra nature
the same goes for the hokage title, in order to pass the test you need to know some seals and jutsus, maybe that you need to use more than 3 chakra natures !
-when kakashi was training naruto (rasensuriken) he told him that by the time a ninja become a jounin he knows at least to use 2 chakra natures, so I assume that naruto has more than the wind nature now that he is beyond jounin
- in the fight against the juubi, the 4 hokages made a high level barrier (that only 4 kage level shinobis could do), so I assume that this is a jutsu that you need to master in order to become hokage since the hokages didn't even ask minato if he knows this jutsu (hashi and tobi didn't even know he existed)
I think that in order to pass the jounin test you need to master some jutsus and have more than a chakra nature
the same goes for the hokage title, in order to pass the test you need to know some seals and jutsus, maybe that you need to use more than 3 chakra natures !