I'm not a WAR guy. Not a proponent of most, if not all, of the 21 century/Moneyball invented metrics. Far too subjective of a valuation. Any Win Above Replacement would have to factor in the performance of all the other players in the books in those games, and how they performed. It can't just be W vrs L relative to Player A vrs Player(s) B,C which is how I understand it to be.
Teams do have to identify guys who can at least produce to a minimum standard at the MLB level, and every team does to varying degrees of success. Perhaps the Brewers are a little better at it than others. But at the end of the day, none of those minimum standards meeting, role / utility / platoon level players are difference makers that decide the team's seasonal fate. Collins, like so many others, is a filler track buried on the 2nd side of an LP from 1975. Solid, complimentary, supplementary, valuable....but not the defining part of the whole.
You have to have those guys on your team, but they can't be roughly 1/3 of your everyday lineup which is the case for MIL at the moment.