To me, they are both winners. I loved Phantom Liberty and just started playing it again last week, only for it to be interrupted by Shadow of the Erdtree. Both DLC's reminded me how much I loved the base game and both are proper and large content additions. And they both run perfectly on Linux on day 1 <3.
Both these games and their DLC's are in my opinion what other game studios should aim for.
Blood and Wine was honestly amazing. I haven’t enjoyed a DLC or xpac that much since Diablo II: Lord of Destruction. I think maybe the Elder Scrolls 3: Morrowind’s expansion Bloodmoon was a great contender as well, but Blood and Wine just took Witcher 3 to a new level. It truly deserved its spot at the top of the heap.
Blood and Wine was exceptional. Much like Shadow of the Erdtree, there was enough content added that they could have almost justified releasing it as a full game. There are full games released today with less content than Blood and Wine brought to TW3.