For years I've been wishing FreeNAS just had that little bit extra so I could move away from Unraid. Unraid is apparently getting some of the features like ZFS, but I seriously doubt it will be as polished as what has been achieved by TrueNAS scale. I've really missed the solid engine room behind a basic server that Unraid does leave a bit to be desired. Things like proper backups, user accounts, integration with ZFS scrubbing. I've tried Proxmox, but the lack of docker is a no go for me. I know it can be run in a VM, but there are some challenges with that when it comes to automating snapshots etc.
So, long story short, I came here thinking I'd chuck this on my test system and be ready to migrate across, but - then I realised this may actually end up being something that I have to pay serious money for, so I think I'll wait and see. Hopefully they make a free edition just like what Freenas has had. Loving what has been done so far on SCALE though!