I have a fever dream vision of a "distribution" of an open source NT running in text mode with a resurrected Interix. Service Control Manager instead of systemd, NTFS (with ACLs and compression and encryption!), the registry, compatibility with scads of hardware drivers. It would be so much fun!
I've kept meaning to look at ReactOS and put it off again and again. I felt Windows Server 2003 was "peak Windows" before Windows 7 so I'd imagine I'd probably like ReactOS.