Aside from Conni's "spank me mommy" German accent, this DLC is pretty much the only reason to bother with the Hirschfelden map,
Canada geese, even after being nerfed, are still the most reliable way to rapidly build cash and shotgun score in the early game. At a moderate investment of 7,000 credits for the caller, some birdshot and good tent and stand placement, you can easily end up earning thousands of credits per hour without having to move from your comfy camping spot. Just make sure you plop your decoys at least 50 meters away from your blind or the flying money bags will literally land right on top of you.