I still don't find the options suggested in regards to eyes reasonable myself, but that's just my personal taste.
If anyone wants to feel immersed with the eyes specifically, they can just give their character red eyes afterwards if they find that fitting. There's different shades of red too, so.

There's also different types of eyes either way, with different colored sclera's. Would require a lot of coding in connection to colors just for something in act 3.
The whole forbidden gummy worm consumption has a default effect for every character from what I've seen? And if you
turn into a mindflayer you don't get an unique model, there's one default model for a player mindflayer.
They do hint at the ''signs of vampirism'' being different for the player through Astarion's dialogue. So it could manifest differently beyond standard expectations of cold skin and newly acquired fangs. (How else are you supposed to bite?)

If anything the fangs are the most important. with some races having slightly different fangs due pre-existing canines. (Tiefling, half orc and such) It would seem more similar to the forbidden gummy worm thing when it comes to putting something on the character model that's the same for every other character with a small few exceptions then.


If you can't win, just make sure you don't lose.