Hmmm, I was always thinking that Christine's textures and also a model, look kinda outdated, or just strange, especially in the last sauna preview, where she looks like she was made out of clay.
Also the hair looks very outdated. I don't remember it clearly, but isn't it a free hair in DAZ? It's not that hard to give the characters new haircuts, right? Changing skin textures that would fit is much harder, though. When I saw the promo pictures of Christine and Sophia in early development stages, I was initially not very intrigued about the game (esp. Chris's model looked kinda derpy).
Only after I saw pictures of Jessica, I decided to give the game a try and I stayed, because I kinda like the narration and suspense, and the branched story (and Jessica's tits, hehe), so now the game is one of my more favourite. I think Jess's model is far more advanced than those of the other prominent female characters.