(Wild idea) I wonder whether NetBSD could be turned into something like device drivers or firmware? Ie it always provides the same interfaces to a hosting *BSD OS which reflects the hardware. It maybe actually runs on whatever device it’s accessing.
Then have OpenBSD tackle system security areas, it’d be a hosting OS. Think minimal, loaded into ram, and maybe system paths mounted ro. Have FreeBSD handle the user interface, possibly somehow the user facing FS, too.
It’s fun to dream ;)
