To me faceID seems a viable option, along with passcode it’s a similar process as now with the fingerprintID and passcode.
The action to hold the phone up to fingerprintID currently means I’m 99% of the time looking into the phone as is, this new option means I’ve no need to bother wiggling the phone around to get my thumb in the “correct” position. Also, on access using fingerprintID as now, I’d say 60% of the time it fails to recognise my thumbprint and I have to passcode myself in anyway.
So in my conclusion, it’ll take me about 5 mins to get used to faceID UI and probably have similar access issues and have to passcode myself in as I do now.
No real bother.
I’m all for the Emoji AR animations in texts me 😆