My friends and I finished What We Do In The Shadows recently. We kind of avoided watching the last episode for a while, because that's it. No more.
They went for a bit of meta feel to it, which is fine. I will miss the characters though. The hypnosis must have worked, because Nandor waking up from a dream next to Gizmo was a great ending. Though I agree with The Guide, I wish Gigi became a vampire for good. I knew that wouldn't happen (partly, as it's been pointed out in the episode, they've already done that once), but I don't know... it really does feel like he wasted years of his life otherwise.
By the way, do we know how are new emotional vampires are created? If Guillermo became an emotional vampire, he wouldn't have to kill people (except by boredom).