The Engineer is probably worth it when attached to a Helblaster Volley Gun. Those weapons got a lot better in the new book and I am probably going to run 1-2 of them from here on out. They will probably help out against monsters too. The nerf I am really surprised with is the Helstorm. I didn't think that many people ran it before. I did b/c the s5 was worth it, but I will be honest as the number of times it hits is rather low.