Honestly I'm at the point where I'm like lets just kill the POTS. It makes little sense to me that it's become a sort of user ID for many things, that we have better alternatives (WebRTC, FaceTime et al) that we should push. Like where it currently says "Telephone number" i should be able to put in a URL like "webrtc://<a pseudonym for my IMEI>" (which itself could be a dropdown box for "This device" on the phone itself...)

For example, why isn't it the default that when a telemarketer calls me it's not a video call? And why can't I preview their video stream prior to answering?

I get its "impossible" to make everyone change, but i do think we should push forwards...