We've been using alembic animation referenced into LOPs up to now but having tested a bit with USD caches there are some interactivity improvements. However I've run into some fundamental problems even in the simplest of scenes. Perhaps my understanding of the possibilities is flawed here.
When I export a USD from SOPs (which appears to just be a wrapper for a LOPs SOP import anyway) with packed prims I seem to get the static mesh with time sampled position and vertex attribs and then a transform primitive with the animation of the packed prim. The whole point of this exercise is to avoid caching anything other than the transform. I'm also not sure what the use case for such output would be. I can obviously post fix this by deleting the mesh prim and exporting again but that can't be a good workflow.
Related to this; I know I can reference the xform over the mesh directly without too much issue but I'm guessing any transforming geo/mesh really should have an appropriate hierarchy with a parent xform.
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