The trade deadline this year will probably sort this all out. If/when Fischer and Chewy move up Boeve becomes homeless... but Boeve isn't a guy to give up on until you know that labrum did forever damage imo.
My guess is we will find out which of Adams/Wilken the Brewers like more and which one they don't mind moving on from. I'm not sure Blake Burke is needed in AA anymore - he and Boeve can move up together to make room for Bitonti, Fisher and Chewy. Pena, Made, and Pratt can all move up a level at the same time this summer as well.
You could consider if the Brewers are making a big swing at the trade deadline that Fischer is going to be a part of those talks. If they are making a smaller move then any of Wilken, Adams, or Boeve will be on the table.