I just saw the trailer. I started getting interested at the point the version of Pink Floyd's 'Eclipse' started.
An old trick: use something familiar (and, they hope, much loved by the target audience) alongside the new concept, thing or movie.
Then the audience will, they hope, transfer their love of the musical hook into enthusiasm for the movie.
Well, it kept me watching to the end, but no matter how epic the visuals got, I wasn't enthused much.
Oh and did I hear the word 'Crusade' early on in the trailer? Oh the irony.