Even 2FA has not been high in to-do list of theymos, so I believe it is time to lock the topic. Fingerprint is too far from current prioritized things in theymos' to-do list. He likely has never had such idea on fingerprint, but something might pop up next April Fool.
That wouldn't eliminate the need for manual recoveries; it might even increase it as people lose their second factor. 2FA would be nice, but IMO the email notifications provide many of the same benefits, so it's not high on my to-do list.