This is the definition of shadow clone technique
Shadow clone technique = Similar to the basic Clone Technique, this technique creates copies of the user. However, these clones are corporeal instead of illusions. The user's chakra is evenly distributed among every clone, giving each clone an...
Naruto needed Ashura Avatar to stalemate Sasuke. Naruto only used clones and nature energy not rikudo chakra to create it. Therefore RSM wasn't needed.
Sasuke even stated that naruto was running out of Rikudo chakra before he even made the Ashura Avatar, so unless RSM enabled naruto to create Kurama clones I don't think he needed Rikudo chakra to do it
AT VOTE 2 sasuke used all nine bijuu and his Rinnegan to create a humanoid ten tails susano'o. Naruto on the other hand just created three Kurama shadow clones, fused them together probably using chakra manipulation, and boosted it by having another kurama clone gather nature energy, no Rikudo...
Mine are :
1) Neji's death used as a Plot device to help pair Naruhina.
(Wasn't necessary, there were many other ways to pair them up. Neji definitely could've died in many more meaningful ways)
2) Kaguya replacing Madara as final villain
(Madara was a badass villain why'd Kishi have to...
I guess it depends on the uchiha . Tobi even mention not just anyone can unlock susanoo but I definitly think madara's the only one that competes with bijuu :). But think about it the senju were supposely equelly as strong as the uchiha , so imagine what kind of overpowered abilities they had...