Board Thread:Theories and Speculation/@comment-30355627-20170312130432/@comment-734582-20170315103724

Kakashisologod wrote: I agree with you,but momoshiki was hyped so kishi could get more money :( Kishimoto's net worth is around 10 million. I don't think he needed the money. It's fairly clear that the Boruto story was made for a movie (leading to some simplifications). Momoshiki has a number of simple powers to keep the thematics clear and clean. Kinshiki was planned to have Jutsu absorbtion but i think that got scrapped because it would be confused with Momo's power.

The third Otsutsuki was likely scrapped because they didn't really need another character. The chunin exams were short due to pacing needs. If this were a long-running manga where the guy had 50 chapters of buildup, he likely would have a massive set of jutsu. But Momoshiki and Kinshiki were introduced in a single movie.

Lastly, as usual, doesn't show =/= doesn't have.

EDIT: I think the primary reason the Push/pull ability of Deva isn't used is because the final Naruto/Nagato showdown featured it heavily and it sort of became Nagato's thing. The rinnegan has plenty of powers and the Uchiha have plenty of powers. Adding them together just makes it seem like they're an endless box of tricks and would likely frustrate readers endlessly.

Obito's whole character thing was slipping through dimensions and the Uchiha were famous for considering the Biju their pets (so Obito + rinnegan combines these two  aspects). Madara uses his own Rinnegan power most of the time. He already has Susanoo and can move just fine, and also doesn't want to revive anyone, making at least 5/6 paths useless for him. There were a few cases were it would've been handy, but then again keep in mind that Obito was defeated because his willpower was broken, and Madara was so used to manipulating people he didn't realize he could be manipulated. In fact, Naruto villains have a tendency for ironic defeats. So if you look at thematic cohesion and clarity, you don't need to look far for answers.