that means they have to add various dialogue options or choices based on the tag for that race.
They certainly should ...
The question is: Will they?
You say that one-liner wouldnt be sufficient ...
And i agree it wouldnt ... but it isnt even for allready existing races.
I mean maybe i got something wrong but i dont think common people of Faerun makes difference between "evil", "eviler" and "evilest" ...
In my opinion it dont really matter if you were caught by Drow, Duergar, Githyanki, or Yuan-ti ... either way you will be enslaved or killed (not necesarily in this order tho*).
So since Larian made it quite clear if you ask me that they concider one-liner to be enough for everyone else ...
What if anything makes you think that they wouldnt follow the same path here?
//Edit:
Therefore i believe that THE REAL QUESTION here is:
Would you accept Yuan-ti Pureblood if reactions on them would be as poor as dissatisfying as they are for any other evil race?
I must admit that i would.
Wouldnt love it obviously but i gues i would get used to that.
---
*i just realized something not exactly related to topic:
Nere was right those Dwarves are incompetent ...
They had one Necromancer but send him out to track a Gnome ... instead of having him in camp raising dead bodies to clear that cavein faster ...
One could argue that he was their only tracker ... except he wasnt there is also that spider trainer sitting on his ass in Grymforge doing nothing
Meanwhile two another Duergars were pushing perfectly good corpses into the water ...
