FaceID with Apple Pay is just a non-starter. Right now, on my iPhone 8, all I have to do is hold it to the reader with my finger in the right place - the RFID scanner wakes the phone, and the fingerprint reader does it's thing. With FaceID, you double click the side button, hold the phone up to your face, wait for it to register, then hold it to the reader. Much easier would have been a fingerprint reader on the side button.
And then there's the notch. The insane thing is, if Apple had just made it a continuous black bar along the top (effectively filling in the gaps either side of the notch, giving less screen area), no-one would have given a hoot.