I like lock both, but occasionally it feels like it's too extreme on some avatars still. What if the 3 distinct selections of lock modes were instead a slider that blends between them?
Basically:
0.0 Lock Hip <-> 0.5 Lock Both <-> 1.0 Lock Head
If the slider is set to 0.75, you’d be 50/50 between Lock Both and Lock Head~ favoring the head and reducing spine elasticity.
A separate control for overall Spine elasticity would also be appreciated.