I don't have objections to a Barnabas who looks this bad when he's first popped from the box. That's one of the things I rather liked about the 2004 pilot--- HOW do you EXPECT a vampire to look after 200 years with no nourishment and the clothes he/she was buried in?
However, as he gets more and more of his minimum daily requirements met, and then some, I'd expect him to beef up a bit--- slowly at first of course, so nobody really notices, then when they do notice, it's like, "Gee, I guess Barnabas is working out a little in his spare time" or "Maybe the poor guy had cancer, glad to see he's recovering." But the FIRST thing that would go would be the chalky face /charcoal eyeliner look, with his first delicious bite.
That's what I didn't like about SWEENEY TODD--- Depp & Bonham-Carter looked like really bad Victorian PM portraits come to life, compared to the rosier folks around them. Like they needed to hit you over the head with the whole "They've lost their souls, and the other people look like meat on the hoof." RIGHT, I get it, I GET it, I GOT IT already.
That's what I will miss, the subtle menace thing that the original series had when the Barn character came on board, via Jonathan Frid. There wasn't as much subtlety in Ben Cross's 1991 version, but there was good menace, and I think the 2004 attempt with Alec Newman wasn't a slouch in that department, either. A Barnabas who looks like someone you can trust, then the truth gets you in the throat--- I don't foresee that effect with a Depp/Burton collaboration. But to each his/her own.