Another Au Ra player checking in with her dissatisfaction on the new lip shape(s). For me with Face 3, Mouth 3, the top lip shape has clearly changed to be more flat. And my bottom lip is less full too.
I'm seeing this with other peoples' face/lip combos too... I think I noticed some Viera and other Au Ra lips lose their curvature in the same way. I understand that I can't objectively say they're worse, but it's definitely changing things when they said they wouldn't. For me, the lip curves are a big charm point, so this is very disappointing and I hope the devs will reconsider. My nose shape changed a little too (Face 3, Nose 2), and like many others have mentioned, the glossiness of the lips have faded.
What adds to my confusion is that the lip curves do still exist on other races in the benchmark... like Highlander Face 2, Mouth 4 pictured below:

So it's not a matter of technical limitation or homogenizing lip shapes...