Well, I used to help my buddy who was a dj do the lights at his shows. I guess now instead of using me for labor and justifying it by letting me smoke out and do the lights (which was a blast, but not worth the back pain), he can just do that by himself. I imagine it would be handy having that control to set the mood for the track or change the environment during a track or at a break, where in most cases the lighting tech would not know the next track. I can see its usefulness.
