I hope for a non ip, celestial themed night time spectacle in the hub. If the sparkles on the hotel, that show in the concept art, are real it would be a nice backdrop. A combination of fountains mixed with fire, added projection, laser and well placed fireworks could make a memorable experience.
For me this doesn't need to be a "here is a show you waited for for hours to watch, standing or sitting to hold a nice spot". I'd rather have it to be there while sitting at one of the many restaurants in the hub and getting the experience going on at an half hour interval or something.