Probably Sasuke sharrinegan power is a counter for infinite tsukyomi.If Sasuke could change reality within a range then when infinite tsukyomi occur (illusion world) Sasuke should be able to change the illusion world into reality within a radius.Naruto role maybe giving Sasuke extra chakra to increase the jutsu ranges for shinobi allaince to support them if necessaryi have just a question. what is sasukes new power? madara said he found out what it is. it looked like he warped away (touching his eye with his hand) when madara used his thunder attack. and then madara was suddenly pierced by sasukes sword wich flew far away when he missed madara the first time. madara should have sensed it. but it seems like sasuke, dont know, change reality or something like that.