Personally, I would love to see them go for all out realism. And by that, I do mean seeing disembodied internal organs at the feet of your dead comrade. I would also like to see the 50 cal bullet tear off your skin in a close miss, just for good measure. I love those guys.
Anyway, what kind of gibbing and carnage can we expect from ARRRRRRRRRRRRMA DOS? (pirate joke )