This. They really need a newer, more modern filesystem, especially since Apple has done away with HFS+ and has introduced APFS. ReFS is really dead in the water, and ZFS would give them a powerful, battle-tested filesystem which they could use as a real selling point for Windows Server. Also things such as Windows updates and system restore would benefit a lot from ZFS's native snapshotting capabilities.
Merging DTrace implicitly means they are fine with both the CDDL and Oracle's patents, and thus that ZFS wouldn't be an issue for them.
Merging DTrace implicitly means they are fine with both the CDDL and Oracle's patents, and thus that ZFS wouldn't be an issue for them.