Seems a mistake for LC_TIME, and LC_PAPER etc to remain the same as the US-centric way they are for C. I'd call the locale U and also have it indicate ISO date

Seems a mistake for LC_TIME, and LC_PAPER etc to remain the same as the US-centric way they are for C. I'd call the locale U and also have it indicate ISO date formats (YYYY-MM-DD), and metric units in general (such as standard paper sizes).