Strange that GE props are moving around. I'm not sure I understand the point, but it probably makes more sense when you see it in person.
Regarding the balloons rumor, we'll see. I've been told things like that for years and sometimes they pan out, sometimes they don't. I think as far as the connection to the theme goes, the actual theme of the area will be unique from what was presented in the concepts, so even if the rumor is true, it doesn't necessarily mean we're getting 'Magic of Flight' as it was spelled out in the concept. It could be something related to exploration, trail blazing, etc, etc. I do like the magic of flight pitch the more I go back and look over it though. The modern-age plane ride really throws you off at fist, but assuming that is a fluke that won't make it into the actual final design, it's a good concept that fits the park well.