I wish it was better, but it was mostly just a hilarious idea badly realised. Still, as reasons to re-read Pride and Prejudice, this was not a bad one.
I'm now hoping to see lots of fanfiction written much better than Seth Grahame-Smith ever could in the same Austen-Zombie universe.
The best non-Austen bit was the slow transformation of a certain character into a zombie. It was just the right parts of funny, gross and sad.