Originally Posted by DMofDarkness
Needless to say, I'm planning on a Necromancer Victory, save for the actions of an extremely competent adventuring party. And even then...
Nice analysis. I have to say, I agree on most parts. The only thing I can see that's off is the edibleness of the reanimated: While it's true that most of them will be unappealing, those that are freshly dead will still be perfectly edible, and even the more decayed ones will look rather tasty after a week of starvation. As a general rule of thumb, the longer something goes without food, the more willing they will be to eat unappetizing food sources.
We'd also run into an interesting situation if the village that this takes place in doesn't normally bury the dead. What if they instead burn the bodies on a pyre (maybe they had a necromancer attack in the past)? This will result in a much smaller starting stock for the necromancer, meaning that his forces may be outnumbered 10-to-1 or more. Of course, as the siege continues, he'll get more stock materials, but then he runs into the problem of using walking buffets that feel no pain as his frontline troops.