[Quoting Gerard Meijssen]
>> <grin> Commons categories are hopeless when you do not speak English. </grin> I do not care for them at all. When functionality opens data for people who do not speak English, then by all means take care of the categories but do understand that it will be no longer for "all of us".
grin?? Then just build a i18n system for cats (likely with i18n from wd).