Sounds like Ward is really trying for the ultimate synergistic force. You can see a lot of synergies popping up in the Grey Knight book.. almost as if he started playing warmachine while he was playing it and now with the crons coming out he went full bore.
I must say at first I didn't like the rumors. I wanted my super tough undead robots but then I stopped and thought... hrmm undead robots. Well then maybe they should make them more horde like and allowed to be brought back to life.
My biggest concern is they get the WBB rule right. Right now from current rumors it sounds very clunky and there are a lot of "what ifs" with it. I'm hoping its done right so I don't have to wait another 6 months for my crons to function properly. Either way I've decided long ago that I will become a die hard cron player once this book drops. I really enjoy the undead theme and feel and its always something I can get behind.