Let Me Strengthen This Thread For Those Who Reject Any Form Of Dojutsu For Naruto.
1. Sharingan has many levels and ...
Yes, Sharingan as many level and the first one has only one main function for most users - Enhanced vision able to track movement. Notice also that being able to track fast movement is similar to having a zoom on the movement. Even Naruto in KM can track Raikages fast movement and dodge it while Sasuke was not able to track the same movement.
This tell you that Naruto has extremely enhanced vision in KM/BM. This is also why I though initially that Minato's eyes were some diluted bloodline (because he can track Raikage and teleport at the last moment).
Combined tailed beast eyes
From what we have seen, each beast has its own eyes. What do you guys think will be the eyes of Naruto if he combines the power of all the tailed beast?