Appearance/discussion of Necropolis units.

I would like vampires to be able to disappear or have some other vampire-like ability. Like, they drink blood, and then the victim slowly dies, or even better, becomes a vampire too. That would be cool.

That would make vampires overpowered.
But in general, I want to add that the vampires in Heroes of Might and Magic V are, in my opinion, better than in other parts. In Heroes of Might and Magic III, they are kind of like zombies, and in Heroes of Might and Magic IV, they are too sweet. Their appearance is great, especially the vampire princes, I like them more than the vampire lords. As for the upgraded appearance, it's not very good; I expected something different. Everything is kind of pink, like emo, except for the vampire princes, and they are not scary at all!