My favorite cannon is the first 4 minicomics, and Grayskull looks very macabre and creepy in the pages inside. But I still think the Jutting maw and gnarled teeth could get a boost from other inspirations, as many have said, the box art for vintage Castle Grayskull is very awesome. And who doesn't think the Filmation Castle is amazing? (If you just think of the Forced perspective shot of He-man Changing you aren't giving it's design enough credit and need to see all of the shots of its exterioors and bridges etc, it is phenomenal.) Hopefully the Horsemen will make everyone happy and have a Killer Sculpt. We will just have to wait and see when we get more info before the Pre-Order.