Why not just make zerker able to stun scrakes again like in KF1? I kind of expected that scrake tactics would carry over to KF2.
As it stands now, the scrakes are more difficult than the Fps.
In any case, medic can kill a scrake much easier than zerk.
Zerk is weak now. I complain because it is the perk I always liked the most. I miss my claymore sword. The only weapon to deal with bulk zombies is the nail gun and the shovel thing (whatever you call that). But large zombies are a different animal now, so zerker is kinda azz-out if the scrake rages on him. I especially like the part where scrake rages on me and the rest of the team runs away on suicidal, or where the medic on the team does not even bother to throw a healing nade. No need to worry, scrake can't be stunned anyway, so time to give up a life.