I'm still hoping that this movie won't be a complete reboot, but will acknowledge the events of the original 1954 film, the way virtually all other Godzilla movies have done. (Even the '98 American version implied that the Japanese had prior experience with a giant reptilian monster named Gojira.) So I don't really want a new origin story for the big guy.
Since the original Godzilla died at the end of the movie I fear we will be getting an origin story...but I do agree with you. I hope they tie it into the first film.