Let's look at this by position: Catcher: The duo of Vogt and Pina looks to be a solid one for at least 2018. The question is whether one or two of Josh Nottingham, Cooper Hummel, Mitch Ghelfi, Payton Henry, KJ Harrison, or Mario Feliciano can take over down the road. First Base: Thames is older, and likely to regress, but Aguilar is also a very solid option and may be on the upswing. Add loads of outfield bats who may move (Braun? Santana?) with youth. Second Base: Walker is old, but solid. Villar was awesome offensively in 2016, slumped in 2017. Both could be solid, both could slump. Sogard's a nice bench option. Shortstop: Arcia's got a great glove, but a .730 OPS doesn't fill me with confidence. That said, Villar showed in 2016 he could play short. I am hopeful he can improve some, but my real worry is he plateaus. I would hate to see the Brewers pay a good-field, no-hit shortstop millions of bucks a year ala Royce Clayton. Third Base: Travis Shaw took a step forward in 2017 from 2016 and at 27, he's in his prime. Other options include Hernan Perez (a righty power bat), Neil Walker (good OBP skills) Left Field: Braun's been injured a bit, but still posts an OPS over .800. But he's not the Braun of 2007-2012. Center Field: A platoon of Phillips and Brinson could make the most of both young players. Broxton may improve, but the depth behind him means he may improve in another city. Right Field: Santana looks to be on the rise. Starting rotation: Chase Anderson had a career year and is 29. But Brent Suter, Brandon Woodruff, and Zach Davies are all improving. Nelson's injury will cost him most of 2018, and it's an open question if he will be the same as he was 28 in 2017. Bullpen: Knebel and Hader are both young, controllable, and likely to be very good. Taylor Williams and Wei-Chung Wang also both are young and will improve. Jeffress was 4-0 with a 3.38 ERA, and at 29, we can count on something similar. I see a lot more positive signs than negative signs with this club. My big worries would be Thames at first, second base if Walker isn't re-signed, Arcia plateauing offensively at short, Braun's health, and Nelson's ability bounce back from the injury. The thing is... all of these are somewhat addressable. Thames can be replaced either by giving Aguilar the job full-time, or moving Santana/Braun. Arcia plateauing means that rather than sign him to a free-agent extension, the Crew needs to look at developing in-house options.I don't mind good-field/.730 OPS shortstops when they cost less than $3 million a season, but if the price goes higher... I'd rather try Hiura, Diaz, or Gatewood at short. Braun's injury just means Troy Stokes makes his Milwaukee debut. As for Nelson... one of Jungmann, Angel Ventura, Derby, or Corbin Burnes will step up.