And that's the nitty gritty of what I am talking about.. Where is the plan, what is the plan?
The plan is to win, to stop the Outsiders from breaching the Outer Gates and destroying our reality. To that end, Mab is forming whatever alliances she can, making webs of contingency plans, recruiting and training any potentially useful agents she finds and maintaining a diligent watch for any Outsider activity, whether direct or through agents.
Given the scope of what Mab has going and overriding need for security, she has to keep her plans secret until action time. And the world can still throw her curveballs like Ethniu. Jim can't possibly do anything to spell out all of Mab's plans in detail without doubling the page count with boring exposition. And she's not the narrator, so we'd be treated to chapter after chapter of Mab explaining things which is totally out of her character.
As far as Harry being WK, He got the job in Changes and took his side quest in GS. The four books since have been Harry doing WK jobs.
Mab doesn't think Molly is ready to be Queen, but is happy with her as the Lady.
Harry used the Placard and the Knife to good effect in BG. Maybe he'll use the Shroud next, perhaps to cure Thomas?
Since Changes, Thomas has fought his trauma from the Nagloshii, dealt with the grief of Harry's death by himself, become a potential father, been blackmailed by his possessed true love/child's mother into attempting to assassinate the leader of an Accorded Nation and imprisoned in supernatural Alcatraz. His life has been almost as eventful as Harry's.
We've got 8 or 9 books left, if we didn't have dangling plotlines to resolve, we be getting all new issues without the built-up investment to hold our interest. There's plenty of time.