Four volumes in, I pretty much know what to expect. This is great character work, with enjoyable continued interactions between the Past X-Men and the Present World. The increased role of Kitty and the introduction of Laura both serve to build up the culture clash at the heart of this story in an interesting way. With that said, this volume is (unsurprisingly) quite decompressed, and it doesn't serve the fight with the Purifiers well (though I love that continuity, and Laura's continuity for that matter). 
 I could have done without the X-Men Gold that's also included in this volume, because it's not at all important for ANX (or for any current X-Men title) and it's also not very good.