The way I see it, the problem here is that it's still too early to decide if this thing should be in GF4 or not. White should try out new ideas for it, and see what works best. Crackles has only made it's debut appearance just to let everyone know that there's something new coming their way. By this, it should be understood that it's attack pattern may change in the future, and that this Ghoul has potential to become something better than just a Jitterskull clone.
Brainstormin' time, eh White?
Just grab a pencil and paper, and write down what has been done and what hasn't. Even if you end up leaving it's moving pattern like it is now, you might be able to give it some twists that make it unique and give it a reason to be feared apart from Jitty. Try everything, even what seems ridiculous. Sooner than later, you'll find some niches for it.