Questionable Questing

In purely technical terms, to go sage mode it means letting in natrual chakra and infusing it into your own. Which causes two big problems. The first one is that your body naturally rejects foreign chakra so you have to learn how to supress that instinct and also how to purify and properly mix natural chakra with your own so any jutsu's you use doesn't back fire and kill you.

So a evolution of Chakra control more than a super sayian form

The next problem is that by willingly letting foreign chakra into you, your letting it influnce you and if you're putting massive amounts of it inside of you those influences can either kill or warp you. So there's a lot of different techniques to keep natural chakra from screwing with you.

Ninja paractise intense self control and have to go through a proccess of literally fighting a physical manifestation of their negative emotions that natural chakra unleashes. Samurai have a similar proccess, except instead of defeating their negative emotions they learn to accept and live with them, and their final test is literally refusing to fight those negative emotions.

Why do samurai embrace negative emotions?

While monks, through several years of meditation and self reflection learn how to literally repress their sense of self and connect and become nature. They literately change their own chakra to match nature's and the two opposing forces become one.

And the three different methods are neither or worse, stronger or better, there just really a reflection of the three main philosophy's to chakra. Monks belive humans are not special, we are all connected with the earth and apart of it, and true enlightenment is realizing how meaningless we are and how much we are apart of something bigger.

Samurai belive that humans are special. That chakra comes from your passion or your will to achive things, and that the path to enlightenment is chasing a dream or a goal and accepting the cost it takes to do that. Which ties in with accepting the negative emotions, to Samurai it means accepting the struggle and pain achiving what you want takes.

Samurai sound like alt Naruto

Ninja are pragmatist to the extreme and don't care about the source or purpose in chakra, instead they believe that chakra is a tool like anything else that must be mastered and learned in order to achive their own enlightment. So defeating your evil emotions is about learning to control your own body and mind, since those two things like chakra are tools you need to master to achive your mission.

But yeah with the samurai, that was a very deliberate comparsion I made. Despite being the ruddest and loudest meber of team seven, Naruto would make the best samurai. While Sauske, despite being the quietest and most refined member, his personal ideas and belief's most closely resemble's a ninja. While funny enough his Brother Itach's belief more closely matches a monk.

You want Samurai Naruto or stick with Monk?

Naruto will stay a ninja, sort of, but he will definitly develop very close relationships and will be very tempted by both the Samurai and Monk lifestyle's. Again Naruto's only staying a ninja because most of his girls can't or don't want to leave the ninja way, but for Naruto like you said he'll probably more closely allign with the samurai ideal's internally but he definitly be influenced by monk idea's too.

Samurai Monk in fighting style?

Naruto will definitely get himself a sword at some point along with his own version of samuri armour excpet using Karuma's demon charkra as a base, but for the monks he'll get not only some lessons in fighting, but he'll also get some lessons about spirits and really mastering his emotional sensing abilitites to the point he can almost hear the thoughts of the people he's closest to.

Really hammer in the point that as loving and amazing of a father and husband he is, maybe there's such a thing as too much love and maybe this interdepedency his harem develops is a little self destructive. It'll be some nice internal conflict for Naruto to deal with in the later part, when you can hear the thoughrs of your wives and realize how much control over them you actually have.

With Kurama, want to give the demon fox chakra more unique abilities and techniques than giant chakra ball of doom?

I'm thinking an armour of toxic, corrupting chakra, that naruto can freely manipulate into any shape and size.

Toxic and corrupting for nine tail fox? What sort of techniques to develop from there and this tie into corrupting the minds and bodies of his harem?

Well, I'm thinking demon chakra is just natrually toxic to humans in general and why fighting them is so dangerous. But how I'll tie it in with the harem, is that exporse in small amounts cause the body to slowly turn demon like as basically an immuna response to it. So lots of fun stuff to do with that.