new transform orientations - local rest pose, parent local
when animating a character you have a choice of transform orientations to be used for animating. local rest pose, or parent local.
To help identify which tracks in the graph editor need modifying, it would be good to have a visual representation of them on the move gizmo. So local rest pose and parent local would be ideal.
2 Comments
3.6 will have parent mode, armature/bones are harder due to the "local location" option but it is in progress.
Done in v 3.6 LTS:
Blender 3.6 LTS - New Features Overview - YouTube
Reference/Release Notes/3.6/Animation & Rigging - Blender Developer Wiki