How competitive is Unbound against a CAD list? Having your opponent's Troops override your ability to contest points seems like it would be a pretty major drawback, at least based on the scenarios that were common when I was playing.

Also, apparently Tyranids DO have formations, is there some kind of central list to figure out where to find all of these? I see a Leviathan Campaign book, but not sure where else I need to be checking. Found something that seems pretty key to Tyranids in WD41, the Tyrannocytes and Mycolid Spores.