Dropping in, I'm one of the people Cyclone mentioned, and I'm indeed interested in this.

As format goes, I'm not opposed to factional play, though I agree with the idea of a faction hinging on one or several key characters as players prefer. That said, I think that the majority of the undead being mindless lends itself well to this kind of scheme - it's more natural to leave them as a background factor while focusing on the main viewpoint figure(s) personality-wise.