Zombies are going to take the BBing scene by storm. Their zero carb, all dust diets ensure thin skin during posing rounds. The only problem is posing oil, which tends to just soak in...
You make good points. As a matter of fact I am confident their posing will also be superior to that of their breathing counterparts, as staying in one position for long periods of time is something they are not strangers to.
However, I do believe that they may lose points in the symmetry round as decomposure is not always equal and can be affected by many different factors including, but, not limited to: original position in coffin, infected wounds from other zombies being placed in areas and loss of limb from various hazards involved in the zombie way of life.