What a shame I didn't discover this sooner -- I finally sent my 11-year-old TrueNAS system[1] through the one-way Linux door about a year ago because I gave up on any hope that something like this would come along and I didn't see another way to keep it current.

The migration path went smoothly but I preferred the FreeBSD setup if only because it forced me to do something a bit more interesting in my spare time. I do quite a lot of Linux work in my day job and it was nice to occasionally work on something that was surface-level similar but subtly and not-so-subtly different.

[1] Over 11 years I have replaced every component (even the CPU/motherboard) at least once except for the case. Migrating from MBR to UEFI was "fun".