Have you ever thought about this
Every character have their special "thing", kakashi have his mouth covered all the time, shino has his glasses, zabuza have his mouth covered also, and so on. Why are the creators so equal to eachother, anime to anime. there's this big thing about the characters that they should have their "thing". Why not make some exeptions and take of kakashis mouth, take of the glasses and make it a little bit more exciting. Why not?