I would love to see some of the season one baddies come back, for example the female Damonfeuer who had the hots for Nick (no pun intended) After all last time we saw her she had survived trying to set herself on fire. Also the last time we saw the Ziegvolk from Episode 4 he was using his persuasive powers on the EMT who was putting him in the ambulance, maybe they could have an episode where he uses his powers to persuade a parole board to set him free or even just persuade a guard to let him go