I just don't think CGI is up to manipulating the human face yet. I feel like you can get away with it with aliens or monsters or something that's intentionally foreign, but I have yet to see anything digital to do with the human face that doesn't just look ridiculous.
“Treat a person as he is, and he will remain as he is. Treat a person as if he were where he could be and should be, and he will become what he could be and should be.”