I'd love to see a crafted supply of ghoul too. But it takes more skill than ghost,luna or phantom, and they aren't too common either. Well, maybe ghost.
But MA has made the L armors kinda tough to craft. The good ones take nice skills, and some of the ingredients are outrageous.
I'm not sure why they do this, but it may be because they want us to skill up and get good health, rather than rely on armor.