Huh? You're talking as though Prodigy doesn't count as all-CGI just because it isn't photorealistic. Since when? The initials stand for "computer-generated imagery," period. Nobody ever said it had to be realistic. That definition would exclude most of the CGI movies ever made by Pixar, Disney, Dreamworks, Polygon, etc.
Besides, what is the point of using computer animation to create something that looks exactly like reality? If that's what you want, get something real and point a camera at it. That will always, always give better results than faking it. Especially where human beings are concerned. There is nothing harder to do than convince a human being that an artificial face is genuine, because a huge amount of the human brain is devoted to the perception of faces. It's enormously simpler and better just to use real actors. Put them in an all-virtual environment? Fine. That gets done a lot already. But replacing them with entirely CGI people that look exactly like real people anyway? What is the point? It would be an enormous waste of effort to do something that can be done far better with real people.