So, if certain minorities have more representation in crime statistics in an area, it is acceptable to have a bias in random searches towards them because doing so meets the expectations of the majority to have to deal with neither crime nor random searches compared to the alternative of unbiased searches which lower arrest rates and expose the majority to more searches?

Even putting aside the slightly absurd difference in stakes with my example, there's also the issue that you're just arguing for centralization, which defeats the point of a system designed for federation in the first place.