Still a lot of problems with those.
Fingerprints: Bloomberg also uses that and I had some experience with this. For some people we had to completely disable fingerprint scanners because it simply would not work with their fingers.
Iris Retina: Hmm not want to have a laser in my eye every time I want to log in.
Facial recognition: Most of them are really not that good. A simple foto of your face can be used to get access.
Another thing to consider. If the biometrics stop working for some reason you wil need a way to reset it which for some wallets is not even possible The Core wallet for instance you CAN NOT reset the passphrase when you can't access the previous passphrase same with GHcloud I know there are wallets where that is possible but not all of them support it.