1. Description of the problem that is addressed in the patch.
The current method for updating a Pose is not obvious to users, especially beginners, as the "Assign Action" method does not imply Pose Asset editing unless the user is well-versed in the Action data-block workings of Blender animation. It is also not available in the 3D View's Animation Panel nor the context-menu which makes such a valuable feature difficult to access and undiscoverable. The title can be confusing as in the Asset Browser it is called a Pose, but in the operator it is called an Action. To edit a Pose/Action, it is assumed that the user already knows to create keyframes for all edited bones in the Action which is not clear to those unfamiliar to Actions. Further, the overwriting-a-Pose feature is available in several other 3D applications' pose libraries and arguably expected in the primary user interface by an animator with experience in those applications.
2. Description of the proposed solution, and a motivation as to why this is the best solution.
The Update Pose feature surfaces a Pose overwriting operator to the primary user interfaces in the Context Menu and Asset Library respectively. Its name includes Pose so the operation has more obvious expectations to the user. It is also a faster, more intuitive solution as it does not require the user to key all edited bones: the operator has an option for reselecting the original pose’s bones before automatically keying them on creation.
3. List of alternative solutions, and a motivation as to why these are undesirable.
Another solution could be renaming ‘Assign Action’ to ‘Edit Pose’ and adding it to the Pose Library’s main UI & Context Menu, but the issue of more steps to complete a common task, assumed understanding of Actions, and likelihood of omitting a bone/bones from the original pose via re-selection remains.
4. Limitations of the proposed solution.
The proposed solution does not edit the existing Pose data, but overwrites it. This overwrites the thumbnail image preview (sometimes undesired when using a custom Pose preview image).
5. Mock-up of the proposed user interface and a description of how users are going to interact with the new feature.
Users can edit a pose by Applying the pose, adjusting the bones, then choosing ‘Update Pose’ from the Context Menu or ‘Update’ from the Pose Library Panels in the Asset Browser.
Context Menu:
Asset Browser Pose Library Panels:
Screencast demonstrating ease-of-use: