The last time I did we did a WiFi password change at my house there were near 100 devices that had to be updated. Such a hassle. Thankfully it's stayed the same over 4 routers and about 7 years.

Orrrrr the protocol would just be smart enough to say “hey, we are thinking of connecting to this network but the MAC address is different — did you recently switch base stations?”

As long as screenless devices and other unattended things like light bulbs didn't need manual intervention, and it was easy to turn off the checks on a Linux server, it would be cool.

But it would probably be an annoyance in large multi hotspot environments, and could become another thing to train people to mindlessly click through like cookie prompts.