.Hunted Horror/Hunted Phantasm: I've never seen these get played in a fish build and I can't imagine why. 1 Bounce or removal spell and all of a sudden your opponent will race you instead of the other way around. You could run Engineered Explosives, but thats a really bad to card combo that won't even win you the game.
Ghazban Ogre: are you kidding me?
Sacromany: this card sees play?!
I acutally have a Suicide black deck with a bit of green splashed in for pernicious deeds and putrefy and it sports hunted horrors and sacromancy, as well as carnophage and ghazban ogre.
Personally, i think ghazban ogre is pretty damned good, considering most decks in vintage these days don't do any damage at all unless they are going to kill you anyway. against any combo deck, you're facing 20 points of tendrils, at which point its irrelevant who controls what. prison decks wont hurt you until they have you locked down, and at that point, you can always sac ghazban to smokestack. if you can run a deck without CoB or fetchlands, you will likely always be ahead in life. as far as fish goes, BG is much quicker than any other build. Dark ritual, mana elves and ESG just make things silly.
besides, there is always a 'cool' factor when you play a card that no-one else would dream of. also, didn't paul sligh's original deck have flarg goblins alongside dwarves? sometimes crazy just plain wins.