I was playing on the Zombie server earlier with a few friends. It was extremely fun. I was very impressed. Very nice job, guys. I don't think zombies are really needed, how's about keeping it in the M&B style? Peasants for the weak dudes, and Dark Knights for the strong.
Here's a video of some of the stuff, with the smooth listenings of the Evil Genius soundtrack:
http://www.youtube.com/watch?v=pwGdcOthkL0