The configuration is a problem here. You can do exactly what you propose, right now, with stuff like ESPhome. You pre-bake what device does and which WiFi netw

The configuration is a problem here. You can do exactly what you propose, right now, with stuff like ESPhome. You pre-bake what device does and which WiFi network it uses into image, burn it in, and you're done. But that's for "us" Normal user needs a way to get the box to configure to his needs, and do it easily. So suddenly you can "log" onto device and edit its config, and you need to find a way to make sure only legit user does it etc. And now it is a big blob of code and you DONT, UNDER ANY CIRCUMSTANCE want to have big blob of code that's hard to update in the wild.