Sean; I find that I use IES files for cyc lighting (much better than the spotlight fixtures), as they provide a greater degree of verisimilitude and I can simulate my actual hang with a reasonable degree of accuracy...
I have attached three files showing in order a render from 2008 showing design intent, next file a shot from the show, and the last a render with a hastily built image prop, the IES cyc groundrow system and a sloppily focussed gobo on the image prop, so I could check to see if the IES-based light source created the same issues you found with the area light.