I prefer a team puts a minor leaguer in the lineup when he forces his way into it. When he's better than the player he replaces, or likely soon will be. I don't like letting clearly inferior players lose games in the big leagues in the hope they might someday be better. Right now, I doubt Alex Meyer helps the Twins win more games. I would, for example, let Buxton play CF for the Twins, because I think he's better than Santana, or soon will be. I wouldn't pay much attention to 2017, much less the years after that. It's difficult to predict next week in baseball, much less next year. Thinking you can plan 3, 5 years ahead is folly.