Honestly, being able to make, dug-in, foxholes would be pretty neat... or trenches. Not to beat a dead horse but an update to base building...
Ducks/Geese to hunt and eat.
Be able to power a house with a generator would be great, or just certain houses could be powered by them.
Fireman carry/buddy drag injured/uncon survivors.
Wandering dogs to be befriended I have heard are on PC that'd be pretty cool to see on console.