@chapeline Yes, this addon seems to be a useful Blender 2.8+ extension which I’ve already found when creating my Piero version. The reasons why I didn’t use it for that project is that it doesn’t solve the limitations of the current “Layer Management” and that I wasn’t sure whether it’s worth investing the time for learning how it works since there’re ideas to change that system to something like “Bone Collections” (see for example here).
