Glad we agree on escaping.

I'm still not sure what the value is over CSV, which also has visible delimiters. It's true that you have to establish/enforce a specific convention around escaping and quoting, since CSV has historical variation here. But it would make more sense to me to encourage any particular consistent handling of CSV, rather than yet another entirely new separator. At least some tools already support CSV, whereas nothing currently supports USV, as far as I know.