I’m guessing that it’s tied in with the dropping of the “Dark Reign” subtitle. Perhaps it’s to avoid confusion - for example, calling Daken “Dark Avengers Wolverine” might cause people to think that he’s a Wolverine variant, although now Wolvie’s art has changed that’s less likely. Ditto for Moonstone and Ms. Marvel, as we now have the actual Ms. Marvel as a separate character, even though - bizarrely - she’s tagged as “Captain Marvel”.