wow, this is awesome, and I love the idea for the flash bulbs from old cameras. I'm going to do an iron man build myself for work on Halloween. I was planning on doing something where if you pull up your hand halfway up it would turn the leds on and have a charge up sound. You could make it so that when you fully extend have the flash go off with a shooting sound (having the half way back charging sound preceding this). you could place the speaker in the palm of your hand. But I do have a tendency to day dream, I just think it would be EPIC to pull something like that off. If you do anything like this you should totally post a tutorial/how to for us lesser newbz.
Keep up the awesome work. It looks great, I look forward to your next update.