The animation in the trailer is extraordinary. I will have to let myself down gradually for I expect the game to be of a lower quality animation.
It was nice to see the Mako and the Hammerhead working side-by-side.
What is with Ashley's hairdo? That doesn't seem to be very military to me. The pictures I have seen of women in the military shows them having short hair, like the men.
Finally, based on the last image of the Earth, will there be anything to be saved upon the completion of Shepard's mission? Both the American continents are on fire, and I assume the rest of the world is on fire as well.