High rise domes!

Fahrenheit 451 is highly readable.

Yes, "the end of the journey’ got me too. So AI-looking. It’s this one:

https://www.deviantart.com/davidevart/art/The-End-Of-The-Journey-952592148

Exactly as you’ve described it: bust, waist, hip and leg length, but with leg length from hip to ankle. It would mean not all sizes are available for a given piece of clothing, but it would mean that on the rack or online, you could tell whether a piece of clothing would fit.

Yes but they would only send one person or a small group, carefully and with protection. Without any sign people would just walk in and slowly suffer the consequences.