I agree, but i disagree with @hyperion, Naruto has great chakra control now, he can control his charka into arms, create mini rasenshurikens on one finger and let not forget how long his shadow clones are lasting in battle against strong enemy........ im pretty sure thats a done deal.
naruto is also great in close combat, specially in sage mode.
But what he is lacking is a wide range of attacks as in close mid and long range combat.
But personally for me i think he is more than cover, his speed,chakra control(rikudo mode, rasengan, rasenshurken(specially when attached to a chakra arm) and summonging for other brain power or distraction more than covers him on all ends.
so for me it would be great if he learnt sealing jutsu but i really dont see why he needs to learn any other types of ninjustsu as he is more than cover.
May i say some people are forgetting that the kyuubi and naruto getting along... so who knows what will the kyuubi teach naruto.
maybe how to use all the elements or how to that he has an affinity to them in rikudo mode, who knows im just saying to be patient lol
peace