I think that language could really open the game up for a lot of personable possibilities. For instance, each race - assuming they have one - should be able to speak the language of their peoples. Each race would obviously get common. Perhaps to initiate the language you want you'd input something like..
elven 'Hello, there.
While not completely productive to the betterment of the games functionality - it would, however, open many currently closed doors to role play.
