since most of the vampires in Innistrad are all about snowballing, bloodcrazed neonate is not a terrible choice still. you can get her out turn 2, and can either A. start hitting early and snowball from there or B. force your opponent to lose a creature to her for fear of having a snowballing monster in your hands. Yeah, not being able to control her attacks or essentially block with her is pretty rough, but i've always had solid runs with her, more so if i can get rakish heir on the field too. Finally, consider curse of stalked prey just because extra +1/+1 counters. goes great with your bloodline keeper, marauders, and nobles (if they're running a bunch of humans) since chances of them getting blocked are statistically lower
Permalink
Have you considered swapping the Pierced hearts for curse of stalked prey? YOu wont get the guaranteed 1 damage each upkeep, but it would keep your vampires snowballing