I’ve always wanted to revisit the New York Pack, and Brock and Afina. Last we saw, they were confronting Declan and kicking out Stacia and Holly. By now they have to realize that they fucked up, so what repercussions have they seen? Were they letting other problems in the Pack fester, were there any challenges to their leadership, did they ever try apologizing to Declan?
Another idea is going into Lois Jay’s backstory with ORACLE. What is her talent and why did she quit and move over to the FBI?
How about a day in the life of any of the supporting characters that John hasn’t written about yet – Dr. Singh, Deckert, Wade Pitcairn, there are plenty of choices.