There's an interesting point that just came to me regarding the Yuan-Ti and Gith. Would the average person in faerun even know what they are? The sense I get from them is that unless you're schooled in planar lore, you probablyhave no idea what they even are. Hell, I'm sure there are plenty of people who could be convinced that a githyanki is just a particularly human-looking dragonborn. They'd have little to no reason to know that gith are evil as a rule and wouldn't be likely to react to them based on that knowledge. Unlike Drow, who at least live in the material plane and do stuff that harms regular people consistently.
