I actually would really enjoy this. I love my little bird feeder, but it kind of disappoints me that you cannot do more and the houses cannot have similar pixel birds around them. Or see more wildlife in Granite Falls. I would love to see some wild animals like the skunk and NPC raccoons that cause trouble like in previous iterations.
I suppose it may sound a little odd, but I would pay for some sort of backyard wildlife pack. (It might even be something you could fit into a stuff pack, though whether or not that is desirable is another matter.)