Well, I remember a singer song writer who
never listened to the radio, afraid that he would copied someone else's song/words...Which is not the case with GL.
Now, we can argue that he was influenced by a lot of movies/serials/writings (Joseph Campbell especially). From that influence base came SW.
The Universal came from the Greeks, then Campbell who took the same bases to explain the myths/legends, human story-telling that you could find in every Earth civilization. The reluctant unknown hero battling the forces of Evil...There's a certain innocence in SW. A child's imagination full of interesting scenario/adventures that touched our heart and core.
I hope that one can, once again, grasp that innocence and show us that it's possible to please everybody...I'm just looking for the next "Chosen One" I guess