Perhaps it should be clarified how the stats work relative to rank, after all, one would think that, given a jounin that is relatively physically weak, and a genin that is relatively physically strong, the Jounin should still be somewhere closer to matching their strength, or even surpassing it. Or perhaps it would be better to just to just give higher ranks more stat points to work with, depending on what is prefered.
Aside from that, are there any intentions to implement a way to improve one's stats through training? That would seem realistic and a good idea.