The only problem I have been finding is trying to replace cards once M12 is out of rotation. Take a look at Vampire Army maybe we can bounce ideas off each other.
Why use Liliana of the Veil ? With no flashback or graveyard shenanigans I think her +1 hurts as much as it helps. Maybe I'm missing something here.
4 Stromkirk Noble +1 Vampire Nocturnus Act of Treason /Traitorous Blood makes fodder for the aristocrat. Despise or Appetite for Brains instead of Duress . more Doom Blade and Go for the Throat . those are my suggestions.
@spatic Liliana's helpful whenever I have a blood artist or a mutilate in hand. Using her -2 right away to make them sac, following by a mutilate to clear the board. Then she can sit at 1 loyalty or discard useless card. In short she's another removal, just that she can be used 2 or 3 times.
@m12 fox adding more red cards diminish the chances of nocturnus ability (which wins games) and thus why I dont want to use red cards (gold black/red cards are fine). I plan on swapping despise/duress depending on the match up.
I am working on a similar build, I recommend Olivia Voldaren helps out against a lot of decks. The build I have is not so focused on nocturnus' effect, but usually has it going. I run a few mainboard bonfires and swords. Check it out, I am open to advice.