Something about the AP damage, but I have to be honest I dont follow the recent patches anymore, since its basically pleasing the crowd instead of actually getting a healthy base game mechanic.
Continuing the discussion from Vermintide 2 - Patch 1.0.7 and 1.0.7.1:
I dont know - removing armoured enemies just removes variety for me, block angles and block in general is bugged anyway and I dont know what you mean with friendlies stopping projectiles.