I like some of the finishers, but I dislike when magic cams change the point of view from my character and slowly zoom-in the dying target's back of the head.
I've seen some of the magic finishers, and frankly, they are all extremely underwhelming and unsatisfying. You have a better, more satisfying view of the kill without the cam, in those cases. Maybe if they zoomed it out about twice as far, it might show more. As it is, if you get a fireball killcam, it's so close that you just see the victim dying while surrounded by an orange glow. Could as easily have been an unfortunate hairspray accident, as a fireball.