They have the best record in baseball, and one of the deepest, if not THE deepest organization, top-to-bottom in baseball. The biggest opportunity to improve, as we all just lived through at the deadline, is to get another infielder, with the following traits:
IDEAL --- realistic...
Good infield defense at SS/2nd/3rd --- any corner IF
Above league average bat vs. RHP --- is a left-handed hitter to spell Ortiz/Durbin/Vaughn
Easily acquired/promoted --- expensive to acquire
I think the Brewers have been trying to acquire/develop this hypothetical player for a while, most notably in the draft/minors (Turang, Black, (Zavier) Warren, Dunn, Bauers, EMJ, Boeve, Bitonti, Made, Di Turi, Burke, Adamczewski, Seigler, Fischer --- righties Luis Pena, Luke Adams, Brock Wilken, and Pratt).
I suspect they believe in those guys, although unless Made explodes next season, I don't see a guy there that represents an IDEAL candidate, as most of them are probably either 1st or 2nd basemen, or they can't hit well enough to be counted on in a starting role.
This guy would represent many of the characteristics. In terms of MLB players that could be acquired, I think it's slim pickings, depending on how strongly the player fits one of those characteristics. I think this is the toughest part about Yelich being a DH.
Maybe there's a deal to be had involving salary relief for a guy like Jake Cronenworth? Luis Garcia Jr.? Scooter's favorite, Brett Baty?