Sincerely I like both the versions, the latter is more near to the Hitomi of the previous games so more "faithful", while the alpha demo build seems more oriented to a realistic face but so also more distant from the original model.
If something, personally I feel more decisive the change realized for the Sigma2 version of Ayane: the original model used -I don't talk about the NG2 version- had something in her face that imo made her appear a completely different person (here the comparison):
Also in that case I know that the fans' complaints have convinced TN to change drastically her look.