No, they don't get the third eye. This is confirmed by lore. Only the 'pure' Garleans get the third eye. That third eye is a sign of their racial purity. Non-purebloods just don't get it. Arenvald doesn't have one hidden underneath his hairdo, unlike they did with Lucia for a bit. But she's a pureblood, he's not!
Honesty? I think Arenvald should probably have his own special model to represent his heritage. But to make it for one NPC who is probably not going to be that important? I doubt SE will do this. Not to mention, I'd imagine designing it is a bit harder than they had to do with Hilda (slap some pointy Padjal ears onto her model).
It's interesting to note Arenvald is on minimum height slider for male highlander though. He's just as tall as my female, tall, highlander is. So I'm not even sure if Garleans need to be tall by default to begin with. Cid is a tiny one as well. Yes, most are super duper tall, but I think they may have a 'height slider' as well, and not everyone has the genes to be super tall.
Honesty? I think Arenvald should probably have his own special model to represent his heritage. But to make it for one NPC who is probably not going to be that important? I doubt SE will do this. Not to mention, I'd imagine designing it is a bit harder than they had to do with Hilda (slap some pointy Padjal ears onto her model).
It's interesting to note Arenvald is on minimum height slider for male highlander though. He's just as tall as my female, tall, highlander is. So I'm not even sure if Garleans need to be tall by default to begin with. Cid is a tiny one as well. Yes, most are super duper tall, but I think they may have a 'height slider' as well, and not everyone has the genes to be super tall.