Engineering is just one trade-off after another. We could try making it from transparent aluminum and painting the inside white for privacy, but that would shield the radios and sensors, and putting the antennae and the sensors on the outside would compromise it's in-atmosphere performance.
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.