NOPE - It's usually BORING to an experienced artist.
OTOH, it's easy to draw from memory the stereotypical. No model needed for the experienced artist.
Not 'could' for me, but 'is.' There is nothing more exciting in drawing than to have a face with 'character' to work with, whether that's due to age or facial features that set the person apart from the 'norm.'
For example: I can whip out a reasonable likeness of a 'perfect' female face in no time, but working with a face that has 'character' takes concentration and attention to detail if one is going to capture a likeness. Look at my painting of Bruno, done when I was still but a novice at painting:
http://www.zianet.com/jaxart/people/Brunow2.jpg
One doesn't get a chance to render such people all that often.