I find it funny that people want in-display fingerprint readers in place of FaceID. Coming back to iPhone from Android, where my previous phone had an in display reader (which worked fine), FaceID is honestly one of the absolute best things about the iPhone, and I never want to lose it. I simply don't have to think about unlocking the phone. I swipe up, I'm in. Period. If my hands were wet, or overly sweaty, or any number of things, the fingerprint reader suddenly became finicky, etc. Face ID just works.