I have the 2nd volume of the Hickman Fantastic Four Omnibus because I missed the boat on volume one. But I also have a lot of the TPBs to fill in the gaps. His New Avengers title might as well be called the Stealth version of the Fantastic Four. This happened back when TPTB at Marvel, probably Axel Alonso was editor in chief. IIRC CEO Ike Perlmutter had ordered the Fantastic Four to be cancelled since Fox still owned the film rights and he didn't want Marvel to be providing free promo material for Fox. The second thing that happeded was that it mandated that every writer switch titles. This put Hickman on the Avengers and New Avengers. I've always felt that his New Avengers was a stealth version of things he didn't get to finish up in his Fantastic Four run. He had said in an interview that the Parliament of Doom arc was supposed have been a multi-issue arc instead of just a single issue. All of this work was leading up to the big finale of Secret War 2015.
I've met Jonathan Hickman 3 or 4 times at C2E2 in Chicago, the most recent time being in 2019. He has signed several things for me over the years. The last time I brought my hard cover edition of Secret Wars and a sketch copy of New Avengers #01 where the Black Swan first appears.
This is the inside page of the Secret Wars hardcover