Hi,
The neutral sublanguage of English (en.po) is missing a lot of texts. Is there really a need to "translate" everything to neutral English? I think it's a waste of time to maintain three sets of English texts (msgid, en.po, en_US.po). It would be more practical to have msgids automatically used as the neutral English texts.
The current en.po causes undesired results with certain LC_* combinations: http://bugs.winehq.org/show_bug.cgi?id=29924