Neutral pose for animation In Softimage we have Netrual Pose, it simple set position/rotation/scale to 0 without moving pivot or object self. It just offset your object. I see that in Blender is Delta Transform, so I copy Transform values to Delta transform and set Transform to 0 0 0.

It works as I need, but:

1) Is there better workflow for copy values? Shortcuts, script ...

2) If I Clear Value, it also Clear my Delta, but I need only Transform.

It looks that I will need some scripts for this workflow, but maybe there is better ....
You can first store the expected neutral pose to pose library for further use.


Go to Object Data tab,  Click  button in Pose Library;
Click  on the right-hand side to add/store pose based on current pose;
Adjust the armature to the expected neutual pose;
Click  again to store it.


Then you can apply either one of them back to the armature object by clicking  on the right-hand side.



You can press Ctrl A > Apply Pose as Rest Pose, if you want to apply the neutral pose to rest pose (the real zero transformation, not offset) by then.