I'm so glad you've had more results using this technique than I had. About two months ago I tried this technique on a large video projection, but I could never get the camera in the exact spot that it needed to be. The image was constantly pulsing, never settling down. You could add light, but this light would fly off in a direction very fast (not fast enough to manipulate).

As far as whether you should bring it to the next level (though I think Narrative is probably a step back :)) I'm not sure. I like it how it is.