Here is a status update. On the Godot side of things, several bugs have been fixed as a direct result of feedback and test files provided by the Blender Project DogWalk team.
- Merged: Update BoneAttachment3D transform when setting the bone index by aaronfranke · Pull Request #104209 · godotengine/godot · GitHub
- EDIT: Merged: Fix the Animation Optimization results for Nearest and Cubic Interpolation by lazarosY · Pull Request #105644 · godotengine/godot · GitHub
- Merged: Allow completely opting out of name suffix magic in 3D scene import by aaronfranke · Pull Request #105014 · godotengine/godot · GitHub
- Waiting for review/approval: GLTF: Use scene root nodes for root nodes, don't include orphan nodes by aaronfranke · Pull Request #103332 · godotengine/godot · GitHub
- EDIT: A similar issue existed in Blender’s glTF import, fixed: Fix #423 - import multiple scenes as collections by julienduroure · Pull Request #2503 · KhronosGroup/glTF-Blender-IO · GitHub
- Waiting for review/approval: Allow attaching scripts to nodes in the Advanced Import Settings dialog by aaronfranke · Pull Request #103418 · godotengine/godot · GitHub
- Waiting for review/approval: GLTF: Don't collapse non-joint leaf nodes when importing skeletons by aaronfranke · Pull Request #104184 · godotengine/godot · GitHub
If anyone here would like to participate in the development, you are welcome to. For example, you can test and review any of these pull requests.