I'm suddenly curious what would happen if a magic plague or a bunch of hunters or some other plot device came through and wiped out all the really old, set-in-their-dominace-heirarchies vampires leaving only the baby vamps behind. And there are still some real jerk-ass vamps, but the majority all just want to enjoy their immortality without getting picked on. And suddenly you've got the head vampire of a Kiss/Coven that decorates in bright colors and wears yoga pants and sweatshirts when holding court, which is really like a giant sleepover with movies and powerpoints and crowns made of aluminum foil if they really, really must.
Or, like, there's one vampire line that hides it's special ability because they know all the other vampires would be jealous. They get to eat real human food, and have it taste like a still living human would taste it. Because all blood diet would get a little blase after a while.
And Vampire animals! There need to be more accidental/on purpose turning of animals. Like, favorite hunting hound, or first cat, or something. This is something I've only seen once before, in You Suck: A Love Story, and I thought it was wonderful and surprising. What would be even more wonderful and surprising is if Forks, Washington became impossible to live in because of rampant vamp!deer due to the local vegetarians.
Actually, I'm going to go ahead and recommend
You Suck because it is a great non-cliche story of vampires and vampirism and blue vegas call girls. The only Christopher Moore book I like more is
The Stupidest Angel. They are not Terry Pratchett level, but definitely in the ballpark.