Yes it's common because prov_pol are used for conformance as well (snap reserve, frac reserve, volume guarantee, dedup, compression not out the box, snap autodelete, vol autosize, etc).
I would like use WFA for provisioning and DFM (Snapprotect) for protection without lose the advantages of Storage Service in DFM, dataset table in WFA contents volumes of course, but we lose the Storage Service information that represents basis concept of storage as Service.
There are 2 options here:
1) We might be able to assist with adding that caching
2) Is there any external information repository that you can get that information from? If so - We can cache it.
1) You will be happy to have this kind of information
2) DFM contains these informations, I don't need to use an other reference somewhere.