Servais wants to put out a lineup that will win a game. That's his job. He may write out a lineup or change a pitcher in different ways that we would, but it's his responsibility.
JD has to look at this a little differently. He's not just playing game-to-game, but also year-to-year. He's talked about winning now and simultaneously building for the future (unfortunately, easier said than done, but still the right approach). But that future creates a problem.
Two years from now, he has to assume that Nellie won't be his DH on opening day. Which in and of itself is not a problem, since either Vogs or Healy could fill that, with the other playing first. But then there's the rub--Cano probably won't be playing second, either. Whether he moves to DH or first, there's still three players for two spots.
Vogs and Healy seem like very good options to help build the future team. But how does he make that happen?