For me ZFS pools with be a great option mostly for the cache pools, especially since they now can have up 30 devices, I don't see LT making the array also a pool, Unraid name would stop making sense, and it wouldn't be a thing I would want anyway since being able to fully use different capacity disks in the array and don't loosing the whole array even if you lose more disks that parity can recover are some of Unraid's biggest selling points for me, though besides being able to use ZFS with cache pools I would still welcome ZFS as file system option with the way the array works currently, i.e. every data disk as an individual filesystem.