Too much wildlife is unbelievable. If I go to the woods, I likely won't meet a single deer.
But birds, insects, the occasional deer or squirrel in the wild, or something. That would be good.
I do believe PoE(1) did this perfectly!
The forests were not overwhelming, but you could always see the occasional critter or even some bigger animals for short periods of time as they ran off when you walked by. c: