would you believe in light type if it weren't physical light, like ampharos, but rather "good" light?
I mean, dark type is called evil type over seas, so why would anybody think light type would be physical light?
if it were to become a thing, I doubt many types will be changed, if any (maybe pokemon with justified will be changed? I don't know)
seems possible to me, but evidence hasn't really arrived, so we'll see