Think about it, if the pronunciation of god's name was that important, the most important thing to an all knowing, all powerful being ....why didn't he ensure it was clearly stated, kept alive and not altered?
We have thousands of old Greek testament manuscripts from as early as the second century, yet there is not one extant example of the tetragramaton in any of these Greek testament scriptures. Why???
Either God is not all powerful or his name is not that important to him. Really, if you were God would you be worried about your reputation? Would you need to be? Or would a loving God be more preoccupied with the salvation of his children? In other words his kingdom?