I was just going through "My Profile", and noticed that it had the option to change the "board language"
I could change it from English, to English, great stuff.
I believe that it is possible, however, to make the different maps playable in different languages, for each individual person.
For instance, how much time would it take to change "Western United States" to "L'ouest des Etats Unis" That way, the site is playable by many different people, in different languages, so that they feel more comfortable while playing.
I know I might give the French version a try, just to see how my French skills really are

Although this is not necessary, and some people would never change it, this community is very diverse, and may care for it.
I'd probably play the priority at a 2, because of the given reason.
Thanks,
-John