Glad to hear that the hardware doesn't restrict too much how expressive you can be with sound. Love the dolphins, but I think you're right that another variant would help. (it's easy to spot the symmetry)
I look forward to seeing the other events you come up with. I'm trying to think of novel ways to present themes covered in books and movies, without copying them. (although some direct homage might be welcome, too)
Can't wait to play the game, but I hope to read many more blog posts before we get there!