Thoughts on the "new" enigine is that its not a new engine, its the old with a facelift. And dont forget you have a dog :). Thoughts on the storyline I have none because I have not read up on it, but I guess its like all the other warfare games, some mad guy or guys or gal/gals want to blow something up and you have to save it, THE UNDERDOG, well just have to say it, been there done that.....
And never pre-order its bad, just look Aliens:CM