Block kicks number can be changed, but it affects both teams. EA had this set to 2 per team per game. I changed it to 0.5 per team.
Didn't see the fumble issue, but they really improved on this from the Madden 20 beta I played.
Sim stats were better with the bakersville mod, but EA would have to fix along with blocking logic. Mods can only change so much of the game, we're not coders. Block shedding can be adjusted if that's what u mean.
Mods probably won't be available till late September on PC.