I was messing around with a mod called Improved Vampire and now I really wish I had a decent computer to play Skyrim on. It improves vampires but doesn't overpower them either. Here is what it does: health 25
stamina 25
healrate 4
staminarate 25
damageresist 20
unarmeddamage 20
meleedamage 5
fJumpHeightMin 175

Now vampires really feel like vampires and the best part is that other vampires treat you as one of them. What Bethesda did was a good start but these changes just make them so much better. It's too bad my computer can only squeeze about 5-20 fps on medium.

Oh look, it's this thread again.