FreeBSD 14 Kernel changes

Hello,

I am trying to make the jump from 12.4 to 14, and am wondering about 
some changes to GENERIC.

For some reason, iwm has been renamed to iwn, fine. But in 12.4 I've 
also had a required firmare:

device          iwm3168fw

That seems to be lacking in GENERIC 14.

In addition, 12.4 had an usb audio device:
device            snd_uaudio

That I am heavily reliant on. That seems to be missing in 14 as well.

Neither is mentioned in UPDATING. Any information or further reading on 
this? Since it is a headless box, I'd like it to come up again with 
(wireless) network.


Finally, two more general questions:

options         NUMA

is generally not needed? I am not up to date wether newer cpus make 
somewhat use of that internally.

Further, if going root on zfs, is ffs for some reasons still requred?

As for some other, more obsuce partitions, like for boot/efi (even 
though those are msdos, but you never know the crosslinks) or for 
bootloader related stuff?

Thanks

Ede