Wouldn't surprise me if they change the challenge rules to 2 for hitters and 2 for pitchers, just having 2 all together isn't working.
Most hitters dont want to risk wasting them and leaving their pitchers with none
Telling you all, i bet Counsell thinks PCA getting walks more now because pitchers prefer to pitch to Bregman, and likes that just for the sake of it gets PCA on base more.