basicly what they are saying is that each race has its own language, and that you will need to build up in stats of a certain language to even understand them.
But the one big problem is...if your a city were everyone gathers (like hydlaa) then are we just going to see "blah blah blah" from other races. Thats the part that will be difficult to figure out.
And also what about guilds??
There are many guilds out there who have every single race. Like TDC (The Dragon Council) We have our share of humans, lemurs, krans, dwarves, elves, i don't think any diobli..but you get my drift) Its improtant for a guild to communicate, would there be a feature where guilds would be able to talk to other members of different races???
edit----just saw the part about common tounge