Very very odd demo to show after all this hype and swelling of interest it has been getting, its first initial preview was beautiful. Wonder why they went with such a safe, lackluster demo....
If you'd have framed it similarly to how the first initial teaser was and having the gameplay be taken in that space, with roaming critters and creatures in dense forest out to more traditional style Halo worlds and up to reveal big vistas (which they did) climaxing on a different type of biome in the mountains that shifts to space, that would be really interesting, show how "new" it is and point out its expansive nature.
But its all marketing stuff, so things get screwed up all the time in that transition.