IF Larian would plan to make it properly ... And that would mean making basicaly second whole game for Goblins (and other evil races), bcs many regular characters would refuse to cooperate with them no matter what.
Then this idea would give 100% +1 from me.
Otherwise ... I dont really see any point, if all you want is just look like a Goblin, while people in Druid Groove, Tollhouse, Waukeen's Rest, and potentialy Baldur's Gate ... are talking to you just as if you were anyone else. (Aka. the way we have it now with Drow.) Then ... i would say, such half-baked implementation is work for some beginner moder. :-/
I still dont understand why cant we change Race for our hirelings. Lets us play Githyanki as racist as they trully are!