Not trying to be contrarian, maybe I am... but try to take this as a discussion about cultural trend instead of a debate.
It could be WSES-018 is exactly what the studio/fans wants her to look like. To us, that face looks weird and almost creepy (if I met a woman who looks like this in real) but to Japanese fans (and the studio) this might be appealing.
In a sense it's not "went wrong", well it went wrong for us (in the West and/or over 25-years-old), but it might not went wrong for the target audience/customer.
There are now so many otakus (I use the derogatory sense of the word) in the Japanese (also slowly invading rest of the CJK market) that their manga- and anime-dominant 2D views is taking over the 3D world. It's almost schism from the West (or ROW) where we want Avatar (and post-Avatar) that virtual (CG) art is so realistic that we sometimes stop trying to distinguish CG from physical stunts, props and acting. But there's a not-so-sub culture in Japan of making the real look like the virtual. Kind of like cosplay gone mad, wild, and berserk. In this case (WSES-018) the eyes are enlarged, set wider apart, the face is flattened, the eye make-up is extremely heavy to simulate manga inking technique.
Basically it's for otakus who spend so much time inside their bedroom and not in eye contact with physical women, and not even watching enough TV/movies to be comfortable about the looks of physical human beings. They want this look, not just to stylize the real 3D people and things to be cute and fun and whatever (the way cosplay is), but way beyond that... their sense of reality is flat, 2D, simple, pastel.
There's a slight tendency of that effect in ROW too. Not so much 2D-ifying persons and objects, but in more and more shamelessness and deliberateness in the carelessness of CG or non-CG stunts. I don't mean in TV shows or smaller-budget films, I mean in even big production, e.g., SW7, when clearly there's plenty of budget and skills to make every scene and every details completely convincing and realistic, but even a child next to me was saying "that's very computerish" at least 30 times throughout the movie. This is beyond Jar Jar Binks, I mean Lucas knew that Jar Jar Binks would annoy some SW fans but he wanted Jar Jar Binks in there for some (new? young?) audience. But here is JJ Abrams saying, hey I have the skills to make a movie like James Cameron made Titanic or Avatar, but here's how I would out-do Cameron, I'd use all my skills to make some scene so wild and crazy that kids will say "WOW" and also "that's very computerish" in the same breath.
Sorry... maybe I am totally off-track. I'm a huge anime fan, so initially I enjoy the whole cosplay scene and live action hentai and all that manga/anime-influenced live action TV shows and films and JAV, but things is pushing a breaking point, I am starting to get plenty annoyed with 2D invading 3D.
Finally another side-track: is that Akari Asagiri in WSES-018?