The only top 30 prospects by tiers in my opinion that the Brewers should be dealing are as follows.
Jett Williams/Bishop Letson/Luke Adams/Quero (for bigger pieces)
Marco Dinges/Ragsdale/Coleman Crow/Meccage/Burke
Former top 30 guys: Mike Boeve/Dylan O'Rae/ Brock Wilken/Tyler Black/Fenelon/Juan Baez/ Jose Anderson.
I am not inclined to deal anyone else higher up than Jett in the least bit. You could try selling high on Fischer but you need to nail that eval. It would be disgusting to see him be Schwarber lite for another team.