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CmptrWz would you say the body training stuff like Yoga & Ballet, gives you, is part of the Ninja body conditioning, in terms of flexibility?
Being able to walk on your toes also means you can make bigger steps when running, by being able to put your feet out more forwards then you could do otherwise, your ankle has then a greater range.
And I can see how being able to sit in a human knot like shape, can be useful in certain other things as well, like say weapon use, for one.
Parkour could be another potential option, there.
It would be bad if you needed to Henge in order to get the needed flexibility in your body, you know.
Add to this that with the full body henge, Naruto has the ability to learn both the male & female side of things.
One thing that could be trained, is (Bo-)staff fighting, enough staff like objects to find around, like a broom, walking staff and so on.
Hunting might also be something for the future, in all forms and can even be expanded to traps and more.
How good would Naruto his book be, in scanning stuff?
Could he say, scan in the entire library, in one go?
What about the restricted Library in the Hokage Tower?
Or the Hospital it's Medical oriented Library?
At least Naruto will be able to cheaply get new books, straight from the bookshop, that should provide a trio of minds, some self relaxation.
Will the Second Hokage his sword & technique scroll be saved?
I can see it becoming the beginnings of a casting device/aid.
Hell, with scanning, they might be able to see the secrets behind all the various Legendary Swords.
Meaning they could thus work on combining them.