God damn, people have selective memories around here. Doom and Doom 2 had almost as much industrial and electronic as they did metal, with some more dramatic cinematic pieces for good measure.
And no, Morbid Angel would not have worked well with the trailer. Doom is not being made specifically for death metal fans, and while I love MA, I also am not stupid enough to believe those songs would have worked for the trailer or would have appealed to any market other than the 5 guys out there who think MA are still relevant. Get over it and move on, the music choice was not the focal point of the trailer. Remove the screaming and it fits in rather well with Doom's original rock/metal tracks.
And people calling it "poser" music. Ha. I used to be one of you. The only posers here are you, afraid to admit you like anything that isn't listed in the "Elitist's Guide to the World of True Metal (contents may vary)". Grow up. Clinging to dead genres doesn't make you appear cooler in the eyes of anyone but yourselves. You're not sticking it to anybody, you're just letting everyone in ear shot know that you are, in fact, an immature dork. Yes, dork is a word exclusively reserved for people like you, an anachronism in itself.