ZFS should prefer the most specific... or something.

[Zaphod Beeblebrox]

So, my experience is that I added two drives (that showed up as ada0 and
ada1) ... something odd with the raid card added a da0 ... which is
unreadable ... seems to be a bogon.

... and ZFS, in it's infinite wisdom changes my nice, neat da0s2a zfs to
diskid/<blahblahblah>s2a.

... this is doubly bad, because then the /dev/da0s1a cannot mount as swap.

I realize that this is can be somewhat fixed for non-root zfs with
import/export, but for root ZFS ... you're stuck.

Can we have ZFS prefer the shortest (rather than longest)?  Can we have it
prefer labels, if they exist (have a priority field in the different types
of geom ... an order in which they are tasted)?

The current situation has been annoying multiple distinct times.