I saw a post from a GM that they would like to see new ideas for languages. What about using citizenship? Perhaps you can use the majority population? If the majority population is a certain race perhaps someone not of that race can pick up on the language. Maybe understand one out of 20 words and improving for every year or whatever they spent as citizens of that area? So if someone had been a citizen of Shard for the past 20 years perhaps they could completely speak the elothean language even if they were tog? Who knows... seems like a good idea to me.

Mujaki, paladin of the people.