Translation of wreak in German

Do you think it would be good to put a regional box near each translation [optional of course]? That means a translator can check countries if it is only used there. Regional differences appear in all languages.
I do translate to Spanish, but I always inform the client about my problem, in order not to have any dispute. The corrections I receive after proof reading are mostly a confusion between the different time forms in Spanish.
What do you think of the current situation? Like you, I am writing letters, emails and other messages. Tomorrow I will leave, then I will go to my friend in Spain, where we are planing a beach vacation.