I would also like to advocate for this change. Granted, any time that it happens is because of operator error, but I've found that every time this happens to us it is when we're working under time constraints and in a hurry. Last week right before time to begin, the worship leader wanted to add two scriptures at a song. Plugged them in, changed the background, all is good....until we fired the pre-service video and nothing happened, Yes, I had changed the entire script! Was so thankful to have the pack feature ready!!!