I like the idea of animals in the game. Turn it into a zombie/hunting game. Harvest animals you kill for the meat, make clothes out of the hides. Have some bears that attack you too.
Theoretically, the idea is excellent. But there are differences between theory and practice. I don't expect a challenging predator AI in the near future. But this could change when the game hits the gold status in (enter your own one digit number) years.