Some games have made this route a success, but very few. Small faces in the text box are alright, but can extend the dev time as they have to be inserted each and every time. Or they are attached to the name and that can get buggy. Unfortunately many games use a subtitle overlay instead of a text box so the scenes are not blocked, which leads to big assed echo characters on the scene blocking the action.
Games like Light of My Life effectively dodge this by making the character pictures part of the scene, but for a game like this one where cinematics are key to it's success this path ruins the game.
Just my thoughts on this, but I hate missing a scene because of a dialog pic in my way.