The poster - which you probably saw in one of tencrush's posts - has been pretty much analysed and found wanting on all levels of graphic design. My personal dislike of it was that Gwen was in the middle. It's not the Gwen Show and she shouldn't have the prime position.
As for the trailer, there have been many discussions on various comms and journals, including this one (and mine, sigh) that descended into wank because every second of it, every word, look, and action, was dissected and then disagreed on - at length. War wounds ensued - you were probably better off at a distance *g*
And I don't think a lot of it would have happened except that we are frustrated and need the new stuff now.