I have never played Dishonored. The entirety of my exposure to it has been articles posted on Kotaku. I it places an emphasis on stealth, which I generally avoid. I also know that, should I play it, I will be treated to magnificent sights such as this one, and that's more than enough to get me to creep silently across a rooftop. Creepy masks not your cup of tea? Don't worry, there's more.
Create a setting unique enough and I will gladly cross genre lines normally forbidden by my personal creed in order to experience it. For instance, I do not play many sports titles, but set Madden inside a microscopic universe where dimensionally-challenged humans are forced to play football to entertain a race of sentient nanomachines and I'm there.
Dishonored is set in an industrial English city around the beginning of the 20th century, where magic and technology collide. It's a place where the masquerade balls haven't quite gotten to the scantily-clad nurse/cat/devil/dental assistant stage, when the costumes had creepy class. That completely cancels out any misgivings I have about being sneaky.
I'm so in.