Not to mention the Lovecraftian eldritch alien horror of Bluetspur!
There was a short Ravenloft story written by Mouseferatu several years ago, about a survivor who just barely make it out of Bluetspur, only to find that he didn't make it quite as far as he had believed. It was really, really good and written in Lovecraftian style. I keep a copy on my computer, it was so good.
I much, much, much prefer the way Tieflings were originally portrayed, as unique individual descendants of fiendish ancestors, each with their own unique individual deformity.
Seeing as how the idea behind Tieflings came from the Medieval idea that birth deformities were caused by the sins of the child's parents and/or ancestors, it makes a whole Hell of a lot more sense that they would each have unique deformities, rather than being a full race of uniformly red-skinned, goat-horned, and lizard-tailed Devilpeople. I just cannot stand that massive alteration. It just makes them... flatter and less interesting.