Yea absolutely, just to be clear do you mean the deck I just played or the one I personally won CAPS on ([Necro/Demon]/Finesse)?
Your deck has good Metamorphosis Synergy and Blood as a reasonable Tech 2 backup plan, but I think it'd be better off with a different starting deck. Since you want Vandy for early board presence, Black would be the logical choice. Deteriorate and Sac the Weak help with early pressure trades, Summon Skeletons and haunt and jav are great for building a War Drums horde for Drakk (and Archery just makes Summon Skeletons disgusting), Jandra and Imp can always play well into Demon Tech 1/2 paired with Soul Stone, and Graveyard + Blood tech 2 is just disgusting.
Necro/Blood is a known nasty deck, pairs well with Fire or Demonology, for all the reasons above.
Also agree that Kidnapping wasn't a great move against my deck, see my thoughts. It would have been a good tech as a reaction to me going Bone Collector, but since my more likely option is Cadets, Bloodlust + Crash Bombers would have been a better option. Easy enough to offset the card deficit with Dark Pact.
That or Shadow Blade and hope to snipe an OC / Garrison / delay my draws, but that's riskier.