Since the first two sample adventures focused on the 'nid threat, I was concerned that the bulk of the first book would be occupied by their carapaced evil...and was right.
More discussion about them than most of the other xenos threats, the map of the region is rife with 'nid-infested planets, and the bestiary has more tyrannid entries than any other race (and, sadly, the bestiary completely excludes Orks or the other nebulous xenos that get a quick mention).
My concern is how fast my play group will get bored fighting what is currently the 'heavy' in the setting. Its like running an Aliens RPG game. Its fun for a few sessions then gets boring fast.
Any thoughts on how to spruce things up a bit with this being the case?