I do not need a solution (just sharing information)
It this a feature people could/would use if available ?
Seems to be a function in the vmware api, where only the changed is moved in a restore which of course makes it faster than a traditional restore.
Personally I have mostly restored either single files/folders or full VMs, when the VM had either been deleted or was unusable for some reason.
Thinking there might be some caveats, since Sýmantec/Veritas hasn't implemented the feature already