Board Thread:Naruto Discussions/@comment-26135923-20150707130017/@comment-26135923-20150707153434

Elveonora wrote: Kaguya = Hagoromo + Hamura. Naruto + Sasuke (Asura and Indra) = Hagoromo Boruto/Himawari = Naruto (Asura) + Hinata, who seems like maybe half of Hamura

So Boruto/Himawari are quarter Hagoromo and less than a quarter Hamura at most and that's a stretch. Not enough to recreate Kaguya.

If you look at Naruto on his own, there's no data to suggest that he would be Asura's reincarnation. With Sasuke, the data is more consistent, yet the bloodline was extremely diluted. With a son or daughter born to Sarada and Bolt, just the fact that you can easily observe the heredity of power suggests that you can expect a hell of a lot from that child.