This concluding episode had a lot of questions to answer, but that problem was quite easily solved here. This part did not leave many questions unanswered, and has yet another turn of events.
Only one piece of information was given during this saga that could be vital to the future of Naruto: If you become unconscious, then you are invulnerable to any form of Genjutsu! Naruto cleverly used this information to get to Yakumo in his own funny style, and he might use it again. Only time can tell here.
This saga is meant to reveal more statistics and personalities behind Kiba, Shino's, and Hinata's group, as well as Kurunai's personality. This saga also helped out with explaining what's going on with Sakura and her training.