Goblins could be a more powerful tool than Thiefling to show prejudices in Faerun.
After some scenes and dialogues, like that with the kids that hit the corpse of a dead adventurer and when asked to not to do that because the dead on't deserve it they underline how thar man killed their parents, or Sazza (I'm a big fan of her).
I agree I want Goblins as a playable race! (With all the due disavantages and so on).
The racism analogue they have going between the druids and the Tieflings really falls flat on its face when they go "death to all goblins? I'll drink to that!" huh.