Honestly, I see parallels to Saturn here. Remember how by the end of Saturn's run they were mostly rebadged Opels with
GMC Acadia and Chevy Uplander clones thrown in for good measure? Replace the minivan with a specially imported Chinese homegrown, and it's the same formula. With Opel having left the nest to get married off to FCA, and the brand identity crisis caused by trying to overcome the "old people" stigma, I have to wonder how much time the entire Buick brand has left on this side of the Pacific.