Wouldn't mind adopting three languages as the working languages of the League, and every two years we vote to see what three languages they should be, that way if Basque all of a sudden becomes the majority language of the member micronations, then it can take its place amongst them.
FYI: The UT-S has English as the official language, but will freely translate it's laws to the following languages:
Japanese
German
French
Spanish
Any other language requires a *G*15 charge for every 15 pages required.
~*G* means Guilder, which is pegged to the Euro