Hi there deckardnexus6 - excellent 'literary hero' list there!
I think Terry will, in the not too distant future, be rated as the modern day Shakespeare (we fans think so already naturally
) - and thank goodness he's almost as prolific as the old Bard of Avon and has a much wider and compelling ability to write empathically about the human condition (Shakespeare did too, but of course this was of his time not ours).
Other authors may sell better in the short term, but his books (not just Discworld) will be relevant for at least another 500 years because, as Tony says, they have a universal appeal and understanding. Even if he never writes another word, he's already made it as an all time great author and we'll carry on loving and admiring his books and his personal values and spirit as long as we can - which I hope is for a very
long time to come.