I do think that using numbers to refer to regions of NVM is a complete
non-starter.  This was one of the big mistakes of SYSV; one so big that
even POSIX couldn't stomach it.

That basically degenerates to using UUIDs. Even then it's not a useful
solution because you need to be able to list the UUIDs in use and their
sizes which turns into a file system.

I would prefer we use names.

Alan