No, I didn't mean Astonishing, because Astonishing was not a flagship title. Even given the star-power of its creators, Astonishing was envisioned originally as a 12-issue maxiseries, and then extended to a 24-issue maxiseries before being turned into an ongoing. It was "the Whedon book," not the X-flagship.
Adjectiveless, however, was. It might not have seemed it under Austen and Milligan, because both wrote a bunch of crap, but at least Austen's Adjectiveless crap was almost worthwhile. Entertaining, at least. But even considering Milligan's stories, he handled a threat on earth, the return of Apocalypse, and whatever other stuff, all while the Uncanny team was futzing around in space, or if Brubaker wasn't on the title yet then the half-cocked Uncanny team was doing something Claremontian and stupid and useless to any type of plot at large. And then Carey came on Adjectiveless, did a couple big ideas, and started pushing toward Messiah Complex.
Adjectiveless was the flagship title, not Astonishing.