Well, I think there's nothing to worry about if the word cliffhanger comes up on the first page. At least not for GA.
1/ Google's intent is to record what's going on, and produce an accurate reflection of reality. Hence, if on an author's sites, a fiction writer uses cliffhangers often, and everyone agrees he uses said , it's indeed Google's job to reflect this reality. If, on top of this, the said author is crowned Queen of Evilest Cliffhangers,, how can they forget to record it?
2/ It's been rumored that in case of potential abuse, Google launches an investigation on sites, and tries to find a scapegoat. By this they mean a hairy quadruped of the ovine kind that they can merrily sacrifice on a bonfire. Is this rumor true? Will they manage to find such a being around these parts for fulfilling their nefarious plans? Only time will tell.