This is an intetresting thread. Firstly there are no rights or wrongs in any of this . THank god people like different things for different reasons. I did invent DADGAD . No kidding . I had played in spanish or G tuning for years and worked up to D tuning ( is it vestapole ? ) and since I had played Gsus4 on banjo( Sawmill ) had used that on guitar and one day said hey what about "sawmill tuning in D !!! It took about an hour to figure out I was in this very popular tuning .