Don't forget the psionic items. The crystal mantles that can be used to increase the enhancement bonus and point pools for your aegis suit. Maybe toss on the glamoured armor ability to that?
Personally the way I'd run it, if the suit provides the equivalent to face protection/helmet then the face cannot be seen normally, just as if they had a normal helmet on. If not, then the character would have to take precautions as they would normally. No mechanical benefit for free but still able to do what the character wanted if they make the choice to use the appropriate suit.
That being said my aegis in a friends game does have a glamoured mantle for the specific reason of not looking like a walking crystal tin can at all times ;)