That's sort of what I was getting at in other conversations regarding the trailer...in that for whatever reasons at this point, what we're seeing of the galactic concept itself (that you described above) doesn't really stand out as something wondrous, or on a cinematic level that hasn't been seen/experienced before in a host of other movies. After things like Star Wars, Avater, Star Trek, and just a bunch of big-time adventure movies...for a non-GL fan, the fact that it's GL and a Superhero isn't enough to make it feel unique or eventful. And I think that's what's being reflected in some actual comic/GL fans...that this character/story is feeling like just another one of a crowd. Another story about a guy who's unexpectedly called upon to be a protector of such-and-such...with some effects and sci-fi thrown in. So in that respect, the only thing that stands out is...well...Reynolds...and his persona that people have come to expect.
What many may take from the trailer is that it's Ryan Reynolds in a superhero movie....perhaps because that's all that the trailer is significantly communicating when all's said and done.