Ok well this is coming from someone who thought CG is an alright show. I honestly think that was a very weirdly placed trailer. They tried to mix hints to the plotline with random mech battling sequences.
Mind you, I think those sequences are going to be seriously awesome. When one of the mechs began to run, I got really excited. And all the angles they integrated for these battles? Awesome!
Besides that really, the movie really doesn't make me excited. I'd even go so far as to say that the animation was downgraded a little from the TV series (CG's original series was so vibrant and colorful! All the colors from that trailer were so dull).