Quote Originally Posted by Arkdra View Post
This doesn't strike me as feasible. Admittedly, I know very little in general about this sort of thing so someone with actual experience can correct me, but they added tons of new bones to the models in the graphics update. The new bones are going to be used to animate cutscenes, emotes, etc. so if they had the old rigs and new rigs split up, they'd have to do 2 different versions of every cutscene and emote to accommodate for this difference in what can be done with the brows, eyes, face, and tongue (which previously had no bones apparently but does now).
From what I understand, they shifted to a method where they have a single basemesh for all heads, then use a technique called Shape Keys to 'morph' that base head into the races and their Face variations.

The benefit of this method is that they only have to rig the face once, and it then is present for all of said variations, meaning that all they have to do is edit the existing Shape Keys, or add new Shape Keys. And since the issue is that the new morphs don't follow the original models closely enough, all they need to do is finesse them a bit more.