" Would you agree to merge your tool with mine?"
Sure! What ever code I have, they are potential open source
"One of my ideas was to capture the status of all language packs on regular basis."
One of possible ways of doing this is ;
1. Implement our tools to analyze a set of locally stored lang packs against the en_utf8
If our tools are hosted outside Moodle then ->
2. Regulary (Maybe once a day) update the locally stored lang packs.
I think I can spent few hours implementing the 1st one during next week. Also I can give a try for the 2nd one in Linux Platform.