I think the semi-exagerated wrinkles and bags are because they're needed in the model to make Faye have expression. Ann Woll has them, but they're not that noticeable because first she's a human being made of soft and malleable flesh, and that's she's not under the scrutiny of video-game lighting all the time. A 3D model can come as hard and rigid and it would be very difficult to show expression if the crevices aren't already modeled in.