Volumes as a geometry type are increasingly used for simulation, modeling workflows, rendering as well as data processing for machine learning. Max needs to be able to ingest, manipulate and save volume representations. OpenVDB is a standard but there are other formats and sources of this type of data. Likewise volume interop between DCC applications plays an important part of modern workflows.
If you are currently using volume data or see the value in it for the work you want to be able to do vote and comment.
-Michael
