It would be nice if we could support network drives on "plain DOS" using the NetMount lightweight client (https://github.com/jrohel/NetMount). Right now, these drives are not detected.
The reason appears to be that NetMount is using the Int 2F/11xxh API for the DOS Network Redirector (see here in the source code), for which we do not have a file system driver.
There is the MSNet driver, but this is using Int 2F/B800h to detect the presence of a network drive, and Int 21/5F02h to find redirected drives.
So, we would probably need a new FSD.