Hmmmmm.... I'm not sure. I like the idea of the lights shiny through, but for me the best thing about the Spark is its small size. Not sure I want to add things that make it bigger. May as well buy a Mavic.
Conceptually you have done a good job as the led indicators are key, my concern is that it is a big chunky bit and wonder how it impacts flight. As I have been thinking about a way to elevate it off the ground-I thought more of a loop from the bumpers at the bottom out to the arms. Lots to think about. You certainly have a knack for the design