What Psyk0Sith said, one of the biggest reason faces look so bad other than the poor animations is the lack of edgeloops and proper edgeloops at that in the models themselves. You seem to be pretty aware of this since you're asking for a new model. I'm guessing Jan is a good choice since for instance in JK2 she probably has a lot of dialogue in the cutscenes. Gah, I wanna help but making a new model is so time consuming for me, animation part is EZ, when it comes to humanoids I tend to really procrastinate. Somebody who has patience should make some rotoscopes using pics of Angela Harry and I might consider it, that or just model over the original model but with 10x better topology. I have a base female I made a while back but it'd need a good bit of tweaking to look asian since the face was built around my ex-gf, dat hoe was a cracker.