After Jokers Wild , I’m glad to see Aces Abroad move on from Fortunato/the Masons (although Fortunato isn’t gone for good just yet). After listening to the afterward by George RR Martin, that seems to have been intentional: the first three books were ordered together and made a self contained arc. A similar pattern will continue through the rest of the books.
It’s also interesting this time that where we were mostly limited to New York and Jokertown before, now we’re getting a look at the rest of the world–in the guise of a world tour taken on by a number of famous Aces, Jokers, and Nats (listening to the audiobooks, I was wondering why in the world they’d be called gnats… swattable? nats makes much more sense). The Wild Card virus may be rare the further you get from New York, but it seems to have impacted every corner of the world in various ways.