More mission animals that looks unique. Like, a gnarly, scarred old grizzly that's been terrorising the area, a gnarly wolf, a red deer that's taken so many bullets it's practically a pincushion or an animal with scars from big fights. Antlered animals that are shedding the skin on the antlers and bits still hanging. Missions with sick animals where the animal is actually sick or deformed.
Animals that in and of themselves are rare or uncommon.
Trail camera that can detect zones in the area if you leave them a while.
More furs reworked (Roe deer, rocky mountain elk, ibexes, etc)
Leaving bait for birds or rabbits.