They seem to be all about wireless though. Things like the charging port, sim tray (do the latest still use physical sims at all?), and any remaining mechanical buttons seem like obvious candidates.
Your “no more wifi passwords” example just felt too real. I still don’t see WiFi going away on their devices, but I could totally imagine a new proprietary network layer that lets you jump between random access points securely with no password, as long as you’re signed into iCloud.
I see. Never used NFC for much other than mobile pay, pairing Bluetooth devices and occasionally reading NFC tags for specific tasks. RFID or NFC train passes aren't a thing where I live and I don't think I ever used Beam or something like it with NFC (nowadays there is Nearby Share which is just Bluetooth, I think). So I was confused why you would say Android removed NFC, because for me it works just like it has from the beginning.