So, you are rather missing the point of cultural sensitivity. If you are borrowing from an author who is of your culture, it isn't a sensitivity issue. Anderson and Gygax were both borrowing from European legends, and so weren't making that much of a hash of sensitivity.
Anderson and Gygax were Americans, not Europeans. And I don't want WotC or some other company hiring an Asian lead designer to make a hash out of Asian culture any more than I want them to hire an American designer to make a hash out of American culture. But this has nothing to do with taking bards from full to half casters so I'll drop it.