I think one of the challenges with using CD in the real world is the "unclean" input that need to be mapped to the various primitives and structures of CD, or stuff in the same vein that came after. Without a way to do that automatically, in a scalable fashion and with minimal human assistance, its utility is limited. Which is why I feel that if we had a way to leverage the current breed of ML techniques to automatically (or even semi-automatically) define this mapping, it would be a big step forward.
