To be honest, this question is directed moreso at the beta testers, but anyone who has been playing quite a bit today may know as well. Are the Vampire Armor sets and the Ancient Falmer Armor sets incomplete? I didn't find a helmet for the Ancient Falmer Armor and I have yet to find a hood for the vampire armor. Just want to double check and make sure I haven't missed them. Also, if the head pieces do exist, where can I find them?

You are correct.

Yup, I had to exploit alchemy to get my VL armor past the cap for lack of the matching set bonus.