Great question Death. Honestly, I think it would have been very easily disrupted by an aggressive opponent. I think cutting Libro will help with that as instead of dropping 10 - 14 on that (Harmonized) you could instead get out a defender like a Skeletal Knight early on to meet the aggression.
The dilemma I'm having now is wanting to include cheap fodder like Crawlers to help against Aggro, but doing that makes Libro/Death Ring more appealing which is against the controlling late game strategy I'm going for. Ultimately, I need to spend some time optimizing the opening to get Cleric > Altar > Graveyard > Eternal Servant (guard) as efficiently as possible. Once that's setup, you should have the flexibility to go aggressive with Venemous + Plague Zombies to start the poison or drop back defensively with your Walls of Bone + Reassemble. I'm thinking something like this might work:
T1 (20) [mwcard=DNC01]Acolyte of the Bog Queen[/mwcard], [mwcard=DNQ10]Meditation Amulet[/mwcard] [11]
T2 (21) [mwcard=DNJ01]Altar of Skulls[/mwcard], Meditate, Pray w/ Acolyte {1 skull} [15]
T3 (25) [mwcard=DNJ04]Graveyard[/mwcard], [mwcard=DNC13]Skeletal Archer[/mwcard] (Servant?), Pray w/ Acolyte {2 skulls} [ 0 ]
From there I would probably want to Harmonize the Graveyard and the rest is up to the game. You can put up a Wall, start playing Venemous Zombies, drop some curses....you know the drill.
Only trouble here is that an acolyte/meditation start telegraphs 'I want to play a very slow game! Please come and hit me!'
I think most decent opponents would respond to that by charging you down pretty quick, even if they usually would have invested in economic stuff.