Loving the new bending quality, Paul! It caught my eye how the torso side-side preserves the hip bone shape, and I also like how the pelvis bending looks now. The torso forwards bending is definitely a big improvement, with no creasing or collapsing. I think in good part this is thanks to the new grouping with only 1 chest, which gives the abdomen groups more polys for better bending. This will help with content creation, and make posing easier.
I have also noticed this new Dawn has superior foot posing, thanks to the new metatarsal bone. I really wanted this capability, and it feels great to see the kind of foot posing you did in this video. It looks natural.
What I couldn't see from the improved thigh bending is how well Dawn2 could sit on her legs or crouch. Those are problematic with DawnSE, but this new rigging looks very promising! This should greatly improve the bending on ground sitting poses, where thigh bending becomes more critical.
I like what I see, Paul! Many improvements in many areas - I think this new grouping is working great with the rigging. It's less bones on the torso and neck, and more bones on the hands and feet. I think it's going to be a joy to pose this figure! It already looks great even before the JCMs, which is how it should be. Keep up the awesome job! ^____^