the intrinsic:transform attribute is very useful while working with primitive transforms, however I would expect it to be consistent across all primitive types that supports it

it seems that packed primitives have it stored as matrix3 , while vdb as matrix4

any reason behind this?
I prefer matrix4 form as it really allows to set the whole transform, and it adjusts P accordingly, or changing P will adjust the transform values as well, so it really reflects the primitive transform