I don't know about direct adaptations being an answer, I meant more along the lines of diversifying their stories and characters by adopting a broader worldview and changing their mindset, something that will take years if it's even possible at all. That'd be asking a lot and would mean a significantly changed Japan. A lot of the attraction people have for their pop culture derives from the insular nature of Japanese society. If you change that society, people might not like what comes with it as far as pop culture interests.