I really wonder if the Lord of Skulls isn't the answer. it obviously wasn't hugely well received but I have to wonder with GW's push towards getting Superheavies included in 40k if they aren't purposely withholding things from Chaos players to try to push up sales of the big ugly mess? Don't get me wrong, I don't think it's a good idea, and even without Chaos buying Knights they'll sell 20 of them for every Lord that goes out, and I bet every Chaos player that BUYS a Lord of Skulls would probably buy a Knight or two instead/as well....