The Facebook topic got me thinking about language and how it applies to lore and what it can be used for in the game. My first thought was to have a common tongue with each race also having their own natural language as well as the language of the Eldar. Why? First thing is it allows for each race to communicate with each other in their own language for RP purposes. Second, it allows for an opportunity to gain knowledge/skill for the character to learn another language and for another to teach it (achievements). Third, it allows for in game lore to be used via books that the Eldar wrote in their own language. If you can puzzle different clues around the world you could eventually learn their language. Once you know their language, you can read books in their language that would open up quests. Maybe even a book that leads to other books, etc. If you read all the necessary books then a larger quest opens up. The clues the books lead too would not be known if you had not read the book. Just thinking out loud.