I feel the same. Batman is at it's heart a very gothic-noir horror fantasy. It is fantastical in a horrific and mostly 'realistic' way - all the horror is grounded, sickeningly. It is Freudian in the popular sense, a deep incision into the twisted grey matter. A female character who is hideous, whose outer appearance reflects her inner depravity, is completely in line with the Batman atmosphere. Mind you, that's only if Morrison doesn't pull another Marvel Boy and have her be beautiful underneath. I haven't read the first issue yet so I am in the -do-not-know.
That's why I am a little hesitant about Batman and Robin, actually. This kind of book seems like the perfect stepping ground for Morrison - away from the incomprehensibility of R.I.P. and the flawed actualization of Final Crisis - but it is also has a flying batmobile. I love it, but it also clashes with my view of Batman in his native Gotham. Fine, Batman with the JLA can have some crazy stuff. Go go Bat Rocket! But the batmobile being a flying machine in Gotham? Something about that just doesn't feel right.
However, I'll give Morrison the benefit of a doubt. Besides, Quitely is an illustration god so I'll buy it with pleasure.