You know Resolume better than me, but when you use the pacmans, I think the blends end up on the two sides of the comp instead of in the center. Right?
Correct, which is why you want to swap your two slices after you've flipped them so that essentially you're looking at your blend from behind (rear projection)
As opposed to rotating them 180 degrees
180˚ rotation would work for ceiling projections, correct?
Take a look at this video to make sure we talking about the same thing. As a note, the soft edge seems to be on the wrong side of the screens so I don't know it its an issue with my rig or an issue with rev62569!