Not sure they're going to get enough sales to justify that add-on. It's got to be hugely expensive to custom write a laser-writer display for each and every cake. Not to mention, I don't see this working for us mobile guys where you have a different location and cake at each event. Now what I do get out of this is the idea of selling animation monograms. Use a strong projector to do an animation over the cake, at the entrance, behind the head table, etc. etc. This could be done with a simple projector setup and a movie file on USB thumbdrive.