They have always had a difficult time doing a lot of loud pyro at night because they don't have the budget and more importantly the land that Disney does. The original Night time Stunt Spectacular was pretty well received and I recall most people waiting around for it at night. I wish that was the kind of show we were getting again. I just hope this one is not as rushed as 360. We need lazers, projection mapping...and all sorts of creative things that make up for not having firework like pyro in the sky.
That being said I also had a fun thought on what if they try Jaws Ride like Mechanics to happen nightly in the lagoon. A Giant Shark set up in key viewing areas that leap up "Fire you son of a B-" and The sharks just pop out of the water. I know that would create some challenges but would be cool.