I wonder how retarded people can get. RSM Naruto is indicated by the lack of eyeshadows when he transforms, but still retains the cross-like pupils.
In the Last and post manga, Naruto transforms without the eyeshadows and with the crossed pupils.
Sasuke still has his sharinnegan.
The reason Naruto doesn't have the orbs behind his back is because once you lose them they're gone forever. We have not seen anyone recreate the black balls once they've disappears, so at it stands now, that's mangafacts.
I swear, people on this base are retarded