I actually toyed with the idea of a setting in which Bram Stoker's book worked a little TOO well. The people hunting the Black Court started talking with each other and comparing notes, eventually they realized there are more things out there than just vampires. Like now with Harry and Murphy, official law enforcement gets involved at some point.
Things escalate exponentially until the magic becomes public. Fast forward to modern times and all the Vampire Courts are in a state where the Blacks are now, with the Black Court being extinct entirely and everyone hates the Whites for what they did with Stoker and his book.
The White Council exists in a state similar to the Jedi Order in Star Wars. They stay out of politics save for lending the occasional bit of advice, but take in young Wizards to train. Warlocks as a concept are all but non-existent now thanks to modern communications, although there are some isolated pockets where they crop up, so the Warden Death squad is still rolling.
Most national super-powers such as the United States, China and Europe have signed on to the accords, and put other counters under their aegis via proxy. Despite this, things remain largely the same. A Necromancy cult will show up and the local police forces will try to deal with it before the Wardens need to be called in. The Denarians are still around messing things up but need to be much more subtle given the Church's influence. Knights of the Cross are regarded as living Saints or celebrities, depending on where you go, but their life-expectancy is still short and brutal. Technology still wonks out at the sight of magic, but not as frequently thanks to a dedicated investment in electronic reliability.
And somewhere in Chicago on the 4th of July a girl by the name of Molly gives the local block party a real treat with her mastery of light and sound, while her kindly father skewers a hotdog on the grill and gives one to his friend's oversized dog.
