Well When we combine an Uzumaki with A hyuga you get the Uzumakis strong lifeforce, huge reserve of chakra, talent in sealing jutsu, and red hair. With the Hyuga you naturally have the Byuakugan, and an affinty for Taijutsu.
Now as we have seen Nature affinity seems to be inherent for family lines. So im going to assume naruto would pass his wind nature on to his child. The child would also have his will of fire, and Naruto would undoubtedly teach their child about the will of fire and the teachings of Jiraiya and Kakashi, so his child would also have a respect for life and a desire to protect.
Now with Hinata as i stated we know the child would have the Byakugan we do not know Hinatas chakra nature but given she is a Hyuga we can imagine the child would have exceptional chakra control. She would also have it learn gentle fist. We can assume that Hanabi would assume the mentor role for the tougher Hyuga training as she is more suited as the head of the Hyuga Clan, and from what i have seen of Hizashi he would make sure our llittle Hyguazaki child would learn taijutsu.
Now when you combine them: It would be a Wind natured- taijutsu fighter who more than likely knows the rasengan. That and with the Byakugan and high reservoirs of Chakra. Already i could see a mini-rasenshuriken style attack-ish combined with the Gentlefist and Byakugan. And as we know Narutos rasenshuriken targets the chakra network, and the Byakugan sees the chakra network. Therefore I can safely conclude that the child of NaruHina would be as stated: a Taijutsu specialist utilizing wind style close range combat tricks with utilization of the gentlefist, rasengan combos, and Byakugan. Also if she is a girl: TITTIES
