Don't you think that this tool might actually be better than eg. Spriter & the like because it's in 3D? I'd suggest not to lock the bone rotations by default since if you want to do only 2D you can use the lock view button anyway and the rotation will be fixed. But if you want to rotate the bones around Z axis you have to manually unlock the bones... a bit of a pain, unless there's a button somewhere that I'm missing that does this for all bones :D
Don't you think that this tool might actually be better than eg. Spriter & the like because it's in 3D? I'd suggest not to lock the bone rotations by default since if you want to do only 2D you can use the lock view button anyway and the rotation will be fixed. But if you want to rotate the bones around Z axis you have to manually unlock the bones... a bit of a pain, unless there's a button somewhere that I'm missing that does this for all bones :D