I'm not so sure. It seems to me that there is almost no value in requiring all traffic to go over HTTPS compared to requiring a subset of traffic to go over HTTPS.

> We can deprecate HTTPS for a decade without actually disabling it, and in the unlikely event that we _don't_ figure it out, we can undeprecate it some years later.

If you want to deprecate it in name only, I guess I can't object since we wouldn't actually be doing anything. I'd figured this would involve trying to hinder HTTP use (similar to how we make self-signed certificates a royal PITA). At any rate, I think you're overestimating the likelihood that we'll figure it out in the short term — particularly given that the proposed happy scenario is to deprecate HTTP and then have thousands of additional for-profit actors trying to put themselves between people and the ability to have websites.