I believe that facial structure is exactly the purpose of Yen's DLC. She looks different and much better than cosplay Yen
Nah they said specifically (On the Polish forums) that it's only a costume change, unless something buggered up in the Google Translate, that's the impression I got, and it makes the most sense.
On the topic of 'The Perfect Yen', the Cosplay Guide was probably the first time I've ever gone "Nope" to a CDPR character design. I'm still not sure whether I prefer SoD or the DLC picture version, but the mere fact that I can't decide is a good sign, they're both fantastic and good enough. Sure, maybe it's not "perfect", but much like Geralt not being quite pale enough, the face is still perfectly good enough and CDPR's model is never going to match exactly what I want, so I'm totally satisfied.