de-aging in movies begins

The latest Tron Legacy had started something rolling. "De-aging" an actor on screen.... Jeff Bridges's character as an avatar is a younger image of his face on a younger body of a different actor, using his younger face. This is the first time a young face to use on a different actor. So if this works, you never know all the older but good actors will start to act young, all it need was their face for the computer to de-age. Maybe it won't happen to everyone making movies now. The cost may be high but when the technology is cheaper, I am sure everyone will start doing it.