I'm sure many of the fans are wondering how the creators of supernatural would portrey the true faces of angels and demons, as well as the wings of angels which humans can't perceive. So maybe, they can display the face of angel while occupying an angel through the point of view of another angel. This is like when the camera showed reapers that were waiting for death to appear, but only Castiel could see them.
What do you think about this? Are you wondering how their true faces look as well?