I saw the pilot a few months ago. Then read they'd made changes and watched it again. I couldn't see a single change. I thought it sucked. Bad. The show would have had so much mystery if it had just started with the FBI turning up to the airport and finding this plane, and piecing it all together. But everything was blown in the opening scene. There was zero tension when the FBI showed up. The characters were all two dimensional cliches. And mostly they were talking heads. Won't be tuning in again. Doubt this show will last.
The borrowing of ideas from so many other sci-fi type shows that influenced this one is so apparent that it holds no real mystery. The X-Files, HEROES, Altered States, LOST elements are so transparent, you knew what was going to happen in every scene way before it played out.
Very disappointing considering the hype put into it.