[Pre-RFC] DNS domains as package namespaces

jmillikin:

If you're OK with a package being published with the name "john-millikin-com-json" and lib.name = "json", then why would you not want to allow the semantically equivalent and much easier to work with "john-millikin.com/json" package name?

Why does this require namespaces vs. just expanding the character set allowed in package names?