The spacing between the fins was perfect for the width of the EL-wire. And the polished metal surface gave a cool 3D effect to the project.
If you want to create your own party-light I would strongly suggest buying your supplies from either Sparkfun or from Adafruit. Both of these companies feature high quality, durable and very bright versions of EL-wire components. I have bought the cheap versions from other vendors. They do work, but they are always much dimmer and more fragile. If you want a dependable, brightly glowing version stick to the versions from Sparkfun or Adafruit - they are worth the extra cost in the long run.
Also check out my glowing pillow project on Instructables for more ideas about how to use EL-wire.