Okay, here's version 2:
As you can see, I've gone back to more of an authentic look for the PK, but I've tried to streamline it a little and enhance some of its organic qualities. I decided to ditch the porcupine quills, but I still wanted something around that maw to make it look like it could take a planet apart even without the anti-proton beam. I already had the trilateral spines or ridges along the length of its body, so I simply extended them past the maw and curved them inward like mandibles. I rather like the effect.
Obviously, there's nothing inside the maw yet except a really bright orange light. I'll be adding some details in there in the near future, and I'm working on a rather elaborate animated effect for the burning center, not involving tinsel and kaleidascopes.
Well, what do you all think?