I wish Apple and Oracle would have just sorted things out and made ZFS the main filesystem for the Mac. Way back in the day when they first designed Time Machine, it was supposed to just be a GUI for ZFS snapshots.

How cool would it be if we had a great GUI for ZFS (snapshots, volume management, etc.). I could buy a new external disk, add it to a pool, have seamless storage expansion.

It would be great. Ah, what could have been.