Everything there looks very very good
I'd love to play as a Nightkin just for the paranoia, hearing whispers and seeing red dots on the compass when no one is there. But I did kinda like the idea that people you actually see in, say, a settlement, could show up as red on the compass, like you suspect them because they gave you a weird look or you thought you heard them planning to kill you when you actually just imagined them saying it. Of course the people aren't hostile to you, they will act like they normally do but due to your schizofrenia, you think they might be after you.
What if when you walk passed people and normally they say "hello" or speak about something random like nuclear winters, their wishes for more gambling, hearing a gunfight the other day and you know, the normal things. But when as a Nightkin, you walk passed someone and there is a random chance that instead of saying any of that friendly stuff, they could say something really nasty to you with a psychotic voice like "if only I had my butterfly knife on me, I'd cut your spleen out and force you to eat it" or something... I'm really bad at threats, but yeah... your Nightkin character would think that he heard a random person spitting this out at him, but you as a player know that it's just inside your character's head because he's paranoid so you can just choose not to beat the living crap out of this innocent person for threatening you.
Also, I'd like to play as a Trog just because of the white skin, hair and eyes. How scary wouldn't that look?