mcsbryk---  If he had been victimizing right and left, he'd cease to be the good guy.    It wouldn't just be ungentlemanly, it would make him a monster.    I like how forgiving everyone here is, though.  (Not sarcasm.)   BC himself has reformed, though, and keeps the sucking to a bare minimum.    Alright, you could make a case that he never really did reform, and point to Carl, but is this supposed to be a show about a hypocritical villain posing as a hero?    I enjoy the fact that BC is three dimensional and still has his harsh violent side.     But his conscience is obviously functioning and active.   Well, except for the problematic Carl thing.
I think that he just can't take blood from someone more than four times or so without killing her/him.     There's Willie.... maybe if he waited a really long time between, it wouldn't be fatal, but that means lots and lots of victims, and when everyone in town has a family member or friend wearing ascots or scarves or turtlenecks, and mooning over their 8x10 glossies of Barnabas and putting him on their speed-dial for no apparent reason, it won't stay a secret long.   Just thinking out loud.   I don't know.