From an artistic standpoint, any Byrne is good Byrne.
Character-wise, I wasn't too taken with any of them but Yeti.
Storywise, I liked all the easter eggs and the backward storytelling, liked how it connected with X-Men: Hidden Years, how Yeti was from an old F4 issue, or how he included the "I was an alien" story into the skrull narrative. I guess that Hulk annual he did fits in with Lost Generation too.
But Pixie, Longbow, Black Fox, Yankee Clipper, these were such plain characters and seemed like missed opportunities to actually have them look like cold war-era types. There wasn't much pathos to them dying because there was so little of them that we got to know.
Yup. The backwards story telling was a fun gimmick, right up until issue #1 (the last issue). I think I'll let it rest for a couple months, then try reading it backwards to see how it feels.
The Yeti and Walkabout/Eternal Brain stuff was fun.