Well I've completed my first idea
and while I wait to see if it passes mark I wanted to test out another idea I had around in my head. I know traditional vanilla creatures Vampire/Werewolf/etc are out, I did have an idea that could be roughly classified as a vampire but is totally different from traditional creatures of the night.
I was thinking along the terms of a parasitic worm that grows along the length of its host spine with the main body being located right behind where the heart is-hence the stake through the heart. The parasite changes its host giving a set of abilities roughly equivalent to the supernatural prowess normally attributed to a vampires supernatural abilities.
These would include
An allergy to sunlight-not fatal but being out for long periods would induce a severe allergic response.
A sensitivity to heavy spices, this would get twisted into the myth of garlic repelling vampires.
Heightened senses, the parasite requires its host to hunt for fresh blood, thus a more powerful sense of smell, sight, and hearing is in order.
Enhanced pheromones, In order to attract prey, the host employs special tailored pheromones to induce a trance-like state of submissiveness.
Longevity, the parasite is extremely long-lived and it is easier to keep the host alive than to seek a new one. By slowing down the aging process, the parasite grants its host the long life it needs. This has the additional affect of slowing down the host's metabolism, making eating and other daily activities largely unnecessary. The host is also able to slip into a hibernation that seems like death to the naked eye.
An allergy to silver. The parasite is greatly sensitive to the chemical properties of silver. And the host will go to great lengths to avoid it. This gave rise to the myth of vampires being repelled by crosses, since sometimes the metal was used in the crafting of crucifix.
In addition the host is drawn to drink blood, from any source. The parasite requires a great deal of it to live and it simply changes its hosts biological structure so that it too may draw nourishment from blood. The more blood the host drinks the larger the parasite grows and the stronger it makes its host. Once in its lifetime, the parasite will breed. Born a hermaphrodite and with a full clutch of eggs, the parasite will fertilize them and force them up through the blood stream and eventually into the host's mouth. The host will be drawn to create a brood by passing on the newborn parasites through biting or lapping at an open wound.
I am not sure how this would be received on the site so before I write it up proper, I'd like some feedback. Toss it? Or keep working on it.