The story may be traditional, but these aren't the values you want to be teaching. As your child is exposed to these traditional stories, you will want to take the time to explain the lessons in them. Without this guidance you may be unknowingly confusing the child. A child can also become confused when the villains in the story are likeable people who do evil. Visible heroes today may be a bit harder to find and less dramatic, which is all the more reason to help your children start with the clear cut fictional heroes and then gradually transfer those learned ideals to the real world around them.
All children start life with the same empty brain cells.
What the adults around them put into those minds determines the resulting personalities. One writer whose books are highly suitable for all ages is Robert Heinlein. He uses a science fiction format to deliver important messages, and it is often easier for a child to receive and understand the message when the setting is entirely unfamiliar and the characters and events can therefore be seen more clearly. For an older child you might want to start with The Past Through Tomorrow a collection of his shorter stories. This lets the child break the reading into distinct units.