I agree Zbrush rocks, and its great to see your striving to get more from yourself so your happy with finding the elements and composition that you feel works for your entry. However, I dunno about it compared to the others.. I still prefer the original setup I think. If you really wanted to push this new composition concept then get really silly maybe you need to go further. Perhaps the zombie could be already have hung himself and the other 3 doing a "Pinata" type scene with a blindfold and bat/stick trying to take swing at the zombie blowing in the wind(not to mention his innards would make good treats for the zombies). Something like that would really push the silly especially considering that you did such a good job all the sculpts though lean more toward a realistic style and the textures. Just my .02 cents worth, keep up the great work and will be looking for more.
(edited to add few comments)