I wonder if they'll be able to make a really great game out of the Aliens concept. Having nothing but melee enemies that should kill you almost instantly is a hard thing to pull off.
This is my concern too. I was hoping they were going to take it in a direction that took in other conflicts the Colonial Marines were involved in. This would have provide a bit more creative flexibility and I remember being fascinated by the details in the Colonial Marines Technical Manual when I read when I was a teenager http://en.wikipedia.org/wiki/Aliens:_Colonial_Marines_Technical_Manual