Have you considered the comedy option?
What about something new, like go through the story from the human perspective, rewind and then do it from the Zombie perspective. You know, "Zombie is only going out shopping for food for his family and is horribly smacked down by some guy nerd raging on him with a shovel."
I don't know, play with it... have some fun. Try to do something new.
or maybe... Human perspective: A group of zombies moaning "brains.... brains..." where they're really chanting "Equal rights for Zombies!" Meh I don't know... Zombies aren't supposed to talk so might be what you want... but hell, try to do something imaginative. Better than the crap that I came up with off the top of my head.
What if a Zombie was to cover a band?
What about a Zombie detective? A zombie reporter?
What happens if a Vampire tries to suck a zombie dry and vice versa.
Meh, tired.. Time for bed. Good luck!